The Deeds of the Dukes of Normandy
The Gesta Normannorum Ducum [The Deeds of the Dukes of Normandy] is a landmark medieval chronicle tracing the rise and fall of the Norman dynasty from its early roots through the pivotal events surrounding the Norman Conquest of England. Originally penned in Latin by the monk William of Jumièges shortly before 1060 and later expanded at the behest of William the Conqueror, the work chronicles the deeds, politics, battles, and leadership of the Norman dukes, especially William’s own claim to the English throne. The narrative combines earlier historical sources with firsthand information and oral testimony to present an authoritative account of Normandy’s transformation from a Viking settlement into one of medieval Europe’s most powerful realms. William’s history emphasizes the legitimacy, military prowess, and governance of the Norman line, framing their expansion, including the conquest of England, as both divinely sanctioned and noble in purpose. Later chroniclers such as Orderic Vitalis and Robert of Torigni continued the history, extending the coverage into the 12th century, providing broader context on ducal rule and its impact. Today this classic work remains a foundational source for understanding Norman identity, medieval statesmanship, and the historical forces that reshaped England and Western Europe between 800AD and 1100AD.
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Paternal Family Tree: Anjou aka Plantagenet
Maternal Family Tree: Aoife ni Diarmait Macmurrough Countess Pembroke and Buckingham 1145-1188
In 1352 [her father] Lionel of Antwerp 1st Duke of Clarence (age 13) and [her mother] Elizabeth Burgh Duchess of Clarence (age 19) were married. He by marriage Earl of Ulster. She was the sole heir of her father and brought the de Burgh inheritance of the lands of Ulster to the marriage. As a consequence of their earlier betrothal he had been called Earl Ulster since 1347. She the daughter of [her grandfather] William Donn Burgh 3rd Earl of Ulster and [her grandmother] Maud Plantagenet Countess Ulster (age 42). He the son of [her grandfather] King Edward III of England (age 39) and [her grandmother] Philippa of Hainaut Queen Consort England (age 41). They were half second cousin once removed. She a great x 2 granddaughter of King Henry III of England.
On 16th August 1355 Philippa Plantagenet Countess March 2nd Countess Ulster was born to [her father] Lionel of Antwerp 1st Duke of Clarence (age 16) and [her mother] Elizabeth Burgh Duchess of Clarence (age 23) at Eltham Palace, Kent [Map]. At the time of her birth she was Heir to the Throne of England since her uncle [her uncle] Edward "Black Prince" (age 25) was yet to be married. She a granddaughter of King Edward III of England. Coefficient of inbreeding 2.22%.
On 26th February 1360 Roger Mortimer 2nd Earl March (age 31) died. He was buried at Wigmore Abbey [Map]. His son [her future husband] Edmund (age 8) succeeded 3rd Earl March, 5th Baron Mortimer of Wigmore.
On 10th December 1363 [her mother] Elizabeth Burgh Duchess of Clarence (age 31) died at Dublin [Map]. She was buried at Clare Priory, Suffolk [Map].
In June 1368 [her father] Lionel of Antwerp 1st Duke of Clarence (age 29) and [her step-mother] Violante Visconti (age 14) were married in the Church of Santa Maria Maggiore, Milan [Map]. The wedding festivities were lavish and ostentatious. The banquet, held outside, included 30 courses of meat and fish presented fully gilded. Between the courses the guests were given gifts such as suits of armour, bolts of cloth, war horses, arms, and hunting dogs. Among the guests were Geoffrey Chaucer (age 25), Petrarch, Jean Froissart and John Hawkwood (age 48). He the son of [her grandfather] King Edward III of England (age 55) and [her grandmother] Philippa of Hainaut Queen Consort England (age 57). They were fourth cousin once removed.
On 7th October 1368 [her father] Lionel of Antwerp 1st Duke of Clarence (age 29) died from poisoning at Alba [Map]. Duke Clarence extinct. His daughter Philippa (age 13) succeeded 2nd Countess of Ulster. He was buried at the St Pietro Ciel d'Oro Church, Pavia [Map].
There was strong speculation he had been poisoned by his [her step-mother] wife's (age 14) father (age 48).
On 24th August 1369 Edmund Mortimer 3rd Earl March, Earl of Ulster (age 17) and Philippa Plantagenet Countess March 2nd Countess Ulster (age 14) were married at Reading Abbey, Berkshire [Map]. She by marriage Countess March. He by marriage Earl of Ulster. She the daughter of Lionel of Antwerp 1st Duke of Clarence and Elizabeth Burgh Duchess of Clarence. He the son of Roger Mortimer 2nd Earl March and Philippa Montagu Countess March (age 37). They were fourth cousins. She a granddaughter of King Edward III of England.
On 12th February 1371 [her daughter] Elizabeth Mortimer Baroness Camoys was born to [her husband] Edmund Mortimer 3rd Earl March, Earl of Ulster (age 19) and Philippa Plantagenet Countess March 2nd Countess Ulster (age 15) at Usk, Monmouthshire [Map]. She a great granddaughter of King Edward III of England. She married (1) before 1393 her second cousin once removed Henry "Hotspur" Percy, son of Henry Percy 1st Earl of Northumberland and Margaret Neville, and had issue (2) after 21st July 1403 her half second cousin twice removed Thomas Camoys 1st Baron Camoys and had issue.
Henrici Quinti, Angliæ Regis, Gesta, is a first-hand account of the Agincourt Campaign, and subsequent events to his death in 1422. The author of the first part was a Chaplain in King Henry's retinue who was present from King Henry's departure at Southampton in 1415, at the siege of Harfleur, the battle of Agincourt, and the celebrations on King Henry's return to London. The second part, by another writer, relates the events that took place including the negotiations at Troye, Henry's marriage and his death in 1422.
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On 11th April 1374 [her son] Roger Mortimer 4th Earl March 3rd Earl of Ulster was born to [her husband] Edmund Mortimer 3rd Earl March, Earl of Ulster (age 22) and Philippa Plantagenet Countess March 2nd Countess Ulster (age 18) at Usk, Monmouthshire [Map]. He a great grandson of King Edward III of England. He married 7th October 1388 his second cousin once removed Eleanor Holland Countess March and Ulster, daughter of Thomas Holland 2nd Earl Kent and Alice Fitzalan Countess Kent, and had issue.
On 21st November 1375 [her daughter] Philippa Mortimer Countess Pembroke, Arundel and Surrey was born to [her husband] Edmund Mortimer 3rd Earl March, Earl of Ulster (age 23) and Philippa Plantagenet Countess March 2nd Countess Ulster (age 20). She a great granddaughter of King Edward III of England. She married (1) 1388 her second cousin once removed John Hastings 3rd Earl Pembroke, son of John Hastings 2nd Earl Pembroke and Anne Manny Countess Pembroke (2) after 30th December 1389 her first cousin twice removed Richard Fitzalan 9th Earl of Surrey 4th or 11th Earl of Arundel, son of Richard Fitzalan 3rd or 10th Earl of Arundel 8th Earl of Surrey and Eleanor Plantagenet Countess Arundel and Surrey (3) April 1398 Thomas Poynings 5th Baron St John of Basing, son of Luke Poynings 4th Baron St John of Basing and Isabel St John 4th Baroness St John of Basing.
Archaeologia Volume 22 Section XVI. What the Duke dyd after the Prince's death.
[After 8th June 1376] Prynce Edwarde beynge deade as we have sayed while the Parlement yett endured, the desperate knyghtes of the countyes began to be hautye & proud, & in the meane tyme the Duke with hys malefactours comynge in amongst the knyghtes with an oration earnestly desyred them, that yett whyle the Parlement endured wherein the matters of the realme were handled, the knyghtes, associated with the Lordes & Barons, wolde delyberate whoe after the deathe of the king & the prynce's sonne oughte to inherite the realme of Englande; furthermore he requested that after the example of France they wolde maike a law that no woman sholde be heire of the kyngdome, for he consydered the old age of the kynge, whom deathe expected in the gates, & the youthe of the prynce's sonne whom, (as yt was sayed) he purposed to poyson yf he colde no otherwayse come by the kyngedome; for if these tow were taiken away & such a law established in the generall parlement he was to be the next heire of the realme; for there was no heire maile in the realme nearer than he; but then yt was in every man's mouth, that [her husband] Edmunde Mortimer (age 24) Earle of March had maryed the [her father] Lorde Lovellex hys brother's daughter [Philippa Plantagenet Countess March 2nd Countess Ulster (age 20)], whoe was elder than he, to whom by righte of hys wyfe the inheritance of this realme perteined; yf the only sonne of the prynce sholde depart without an heire, whom the Duke greatly feared, knowynge hym to be a good & juste man, & therfor he laboured all that he colde, that the inheritance of this realme sholde not come to hym. Havynge begune therfor [to] consulte together, yt was answeared hym to be neadles to labour about such thynges, seying that they had other greate & weightier matters in there handes, that had neade to be largely handeled, & especially (sayed they) for that the kynge ys yett sounde & in healthe, & for hys age may lyve longer than any of us, but be yt granted the kynge sholde depart yet we want not an heire; the prynce's sonne (now ten years olde) lyves and is now lyvyng there ys no neade to labour about such matters. With these wordes the Duke confounded herewith departed.
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On 10th December 1376 [her son] Edmund Mortimer was born to [her husband] Edmund Mortimer 3rd Earl March, Earl of Ulster (age 24) and Philippa Plantagenet Countess March 2nd Countess Ulster (age 21) at Ludlow Castle [Map]. He a great grandson of King Edward III of England. He married 30th November 1402 his fourth cousin once removed Catrin Mathrafal, daughter of Owain ap Gruffudd "Glyndŵr" Mathrafal Prince Powys and Margaret Hamner, and had issue.
Around 1377 [her father] Lionel of Antwerp 1st Duke of Clarence was reburied at Clare Priory, Suffolk [Map]. Philippa Plantagenet Countess March 2nd Countess Ulster (age 21) succeeded 5th Countess of Ulster.
In 1378 [her son] John Mortimer was born to [her husband] Edmund Mortimer 3rd Earl March, Earl of Ulster (age 25) and Philippa Plantagenet Countess March 2nd Countess Ulster (age 22). There is some debate about his parentage. He a great grandson of King Edward III of England. He married after 2nd January 1402 Eleanor Rossall.
On 27th December 1381 [her husband] Edmund Mortimer 3rd Earl March, Earl of Ulster (age 29) died. He was buried at Wigmore Abbey [Map]. His son [her son] Roger (age 7) succeeded 4th Earl March, 3rd Earl of Ulster, 6th Baron Mortimer of Wigmore.
On 5th January 1382 Philippa Plantagenet Countess March 2nd Countess Ulster (age 26) died at Cork [Map]. She was buried at Wigmore, Herefordshire [Map]. Her son [her son] Roger (age 7) succeeded Heir to the Throne of England, 6th Earl of Ulster
Kings Wessex: Great x 10 Grand Daughter of King Edmund "Ironside" I of England
Kings Gwynedd: Great x 13 Grand Daughter of Maredudd ab Owain King Deheubarth King Powys King Gwynedd
Kings Seisyllwg: Great x 15 Grand Daughter of Hywel "Dda aka Good" King Seisyllwg King Deheubarth
Kings Powys: Great x 13 Grand Daughter of Maredudd ab Owain King Deheubarth King Powys King Gwynedd
Kings Godwinson: Great x 10 Grand Daughter of King Harold II of England
Kings England: Grand Daughter of King Edward III of England
Kings Scotland: Great x 9 Grand Daughter of King Duncan I of Scotland
Kings Franks: Great x 16 Grand Daughter of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor
Kings France: Great x 11 Grand Daughter of Hugh I King of the Franks
Kings Duke Aquitaine: Great x 14 Grand Daughter of Ranulf I Duke Aquitaine
Great x 4 Grandfather: King John of England 
Son of King Henry "Curtmantle" II of England
Great x 3 Grandfather: King Henry III of England Son of King John of England
Great x 4 Grandmother: Isabella of Angoulême Queen Consort England
Great x 2 Grandfather: King Edward I of England Son of King Henry III of England
Great x 4 Grandfather: Raymond IV Count Provence 
Great x 3 Grandmother: Eleanor of Provence Queen Consort England
Great x 4 Grandmother: Beatrice Savoy Countess Provence
Great x 1 Grandfather: King Edward II of England Son of King Edward I of England
Great x 4 Grandfather: Alfonso IX King Leon 
Great x 3 Grandfather: Ferdinand III King Castile III King Leon Great Grand Son of King Henry "Curtmantle" II of England
Great x 4 Grandmother: Berengaria Ivrea I Queen Castile Grand Daughter of King Henry "Curtmantle" II of England
Great x 2 Grandmother: Eleanor of Castile Queen Consort England 2 x Great Grand Daughter of King Henry "Curtmantle" II of England
Great x 4 Grandfather: Simon Dammartin
Great x 3 Grandmother: Joan Dammartin Queen Consort Castile and Leon
Great x 4 Grandmother: Marie Montgomery Countess Ponthieu
GrandFather: King Edward III of England Son of King Edward II of England
Great x 4 Grandfather: King Louis IX of France 
Great Grand Son of King Henry "Curtmantle" II of England
Great x 3 Grandfather: King Philip III of France 2 x Great Grand Son of King Henry "Curtmantle" II of England
Great x 4 Grandmother: Margaret Provence Queen Consort France
Great x 2 Grandfather: King Philip IV of France 3 x Great Grand Son of King Henry "Curtmantle" II of England
Great x 4 Grandfather: James I King Aragon
Great x 3 Grandmother: Isabella Barcelona Queen Consort France
Great x 4 Grandmother: Violant Árpád Queen Consort Aragon
Great x 1 Grandmother: Isabella of France Queen Consort England 4 x Great Grand Daughter of King Henry "Curtmantle" II of England
Great x 4 Grandfather: Theobald IV King Navarre 
3 x Great Grand Son of King William "Conqueror" I of England
Great x 3 Grandfather: Henry I King Navarre 4 x Great Grand Son of King William "Conqueror" I of England
Great x 4 Grandmother: Margaret Bourbon Queen Consort Navarre 
Great x 2 Grandmother: Joan Blois I Queen Navarre 3 x Great Grand Daughter of King Henry "Curtmantle" II of England
Great x 4 Grandfather: Robert Capet Count of Artois Great Grand Son of King Henry "Curtmantle" II of England
Great x 3 Grandmother: Blanche Capet Queen Navarre 2 x Great Grand Daughter of King Henry "Curtmantle" II of England
Great x 4 Grandmother: Matilda Reginar Countess Saint Pol 2 x Great Grand Daughter of King Stephen I England
Father: Lionel of Antwerp 1st Duke of Clarence 
Son of King Edward III of England
Great x 4 Grandfather: Bouchard Avesnes
Great x 3 Grandfather: John of Avesnes I Count Hainaut 4 x Great Grand Son of King William "Conqueror" I of England
Great x 4 Grandmother: Margaret II Countess Flanders 3 x Great Grand Daughter of King William "Conqueror" I of England
Great x 2 Grandfather: John of Avesnes II Count Hainaut II Count Holland 3 x Great Grand Son of King Stephen I England
Great x 4 Grandfather: Floris Gerulfing IV Count Holland 
Great x 3 Grandmother: Adelaide Gerulfing Countess Hainaut 2 x Great Grand Daughter of King Stephen I England
Great x 4 Grandmother: Mathilde Reginar Countess Holland and Palatine Great Grand Daughter of King Stephen I England
Great x 1 Grandfather: William of Avesnes I Count Hainaut III Count Avesnes III Count Holland II Count Zeeland 4 x Great Grand Son of King Stephen I England
Great x 4 Grandfather: Waleran Luxemburg III Duke Limburg 
Great x 3 Grandfather: Henry "Great" Luxemburg V Count Luxemburg III Count Namur
Great x 4 Grandmother: Erminsende Namur Countess of Bar
Great x 2 Grandmother: Philippa Luxemburg Countess Hainaut and Holland 5 x Great Grand Daughter of King William "Conqueror" I of England
Great x 4 Grandfather: Henry of Bar II Count of Bar 3 x Great Grand Son of King William "Conqueror" I of England
Great x 3 Grandmother: Margaret of Bar Countess Luxemburg and Namur 4 x Great Grand Daughter of King William "Conqueror" I of England
Great x 4 Grandmother: Philippa Capet Countess of Bar
GrandMother: Philippa of Hainaut Queen Consort England 5 x Great Grand Daughter of King Stephen I England
Great x 4 Grandfather: King Louis IX of France Great Grand Son of King Henry "Curtmantle" II of England
Great x 3 Grandfather: King Philip III of France 2 x Great Grand Son of King Henry "Curtmantle" II of England
Great x 4 Grandmother: Margaret Provence Queen Consort France
Great x 2 Grandfather: Charles Valois I Count Valois 3 x Great Grand Son of King Henry "Curtmantle" II of England
Great x 4 Grandfather: James I King Aragon
Great x 3 Grandmother: Isabella Barcelona Queen Consort France
Great x 4 Grandmother: Violant Árpád Queen Consort Aragon
Great x 1 Grandmother: Joan Valois Countess Zeeland Holland Avesnes and Hainaut 4 x Great Grand Daughter of King Henry "Curtmantle" II of England
Great x 4 Grandfather: King Charles Capet of Sicily Great Grand Son of King Henry "Curtmantle" II of England
Great x 3 Grandfather: Charles II King Naples 2 x Great Grand Son of King Henry "Curtmantle" II of England
Great x 4 Grandmother: Beatrice Provence Queen Consort Sicily
Great x 2 Grandmother: Margaret Capet Countess Valois 3 x Great Grand Daughter of King Henry "Curtmantle" II of England
Great x 4 Grandfather: Stephen V of Hungary
Great x 3 Grandmother: Mary of Hungary Queen Consort Naples
Great x 4 Grandmother: Elizabeth Cuman
Philippa Plantagenet Countess March 2nd Countess Ulster Grand Daughter of King Edward III of England
Great x 4 Grandfather: Richard Mór Burgh 1st Baron Connaught 
Great x 3 Grandfather: Walter Burgh 1st Earl of Ulster
Great x 4 Grandmother: Egidia Lacy Baroness Connaught 
Great x 2 Grandfather: Richard "Red Earl" Burgh 2nd Earl of Ulster
Great x 1 Grandfather: John Burgh
Great x 4 Grandfather: John Burgh
Great x 3 Grandfather: John Burgh
Great x 4 Grandmother: Hawise Valey
Great x 2 Grandmother: Margaret Burgh Countess Ulster
GrandFather: William Donn Burgh 3rd Earl of Ulster Great Grand Son of King Edward I of England
Great x 4 Grandfather: Gilbert Clare 5th Earl Gloucester 4th Earl Hertford 
2 x Great Grand Son of King Henry I "Beauclerc" England
Great x 3 Grandfather: Richard de Clare 6th Earl Gloucester 5th Earl Hertford 3 x Great Grand Son of King Henry I "Beauclerc" England
Great x 4 Grandmother: Isabel Marshal Countess Cornwall, Gloucester and Hertford 
Great x 2 Grandfather: Gilbert "Red Earl" Clare 7th Earl Gloucester 6th Earl Hertford 4 x Great Grand Son of King Henry I "Beauclerc" England
Great x 4 Grandfather: John Lacy Earl Lincoln 
Great x 3 Grandmother: Maud Lacy Countess Gloucester and Hertford 4 x Great Grand Daughter of King Henry I "Beauclerc" England
Great x 4 Grandmother: Margaret Quincy 3rd Countess Lincoln and Pembroke 3 x Great Grand Daughter of King Henry I "Beauclerc" England
Great x 1 Grandmother: Elizabeth Clare Lady Verdun Grand Daughter of King Edward I of England
Great x 4 Grandfather: King Henry III of England Son of King John of England
Great x 3 Grandfather: King Edward I of England Son of King Henry III of England
Great x 4 Grandmother: Eleanor of Provence Queen Consort England
Great x 2 Grandmother: Joan of Acre Countess Gloucester and Hertford Daughter of King Edward I of England
Great x 4 Grandfather: Ferdinand III King Castile III King Leon Great Grand Son of King Henry "Curtmantle" II of England
Great x 3 Grandmother: Eleanor of Castile Queen Consort England 2 x Great Grand Daughter of King Henry "Curtmantle" II of England
Great x 4 Grandmother: Joan Dammartin Queen Consort Castile and Leon
Mother: Elizabeth Burgh Duchess of Clarence 2 x Great Grand Daughter of King Henry III of England
Great x 4 Grandfather: King John of England Son of King Henry "Curtmantle" II of England
Great x 3 Grandfather: King Henry III of England Son of King John of England
Great x 4 Grandmother: Isabella of Angoulême Queen Consort England
Great x 2 Grandfather: Edmund "Crouchback" Plantagenet 1st Earl of Leicester 1st Earl Lancaster Son of King Henry III of England
Great x 4 Grandfather: Raymond IV Count Provence
Great x 3 Grandmother: Eleanor of Provence Queen Consort England
Great x 4 Grandmother: Beatrice Savoy Countess Provence
Great x 1 Grandfather: Henry Plantagenet 3rd Earl of Leicester 3rd Earl Lancaster Grand Son of King Henry III of England
Great x 4 Grandfather: King Louis VIII of France 3 x Great Grand Son of King William "Conqueror" I of England
Great x 3 Grandfather: Robert Capet Count of Artois Great Grand Son of King Henry "Curtmantle" II of England
Great x 4 Grandmother: Blanche Ivrea Queen Consort France Grand Daughter of King Henry "Curtmantle" II of England
Great x 2 Grandmother: Blanche Capet Queen Navarre 2 x Great Grand Daughter of King Henry "Curtmantle" II of England
Great x 4 Grandfather: Henry Reginar II Duke Brabant Great Grand Son of King Stephen I England
Great x 3 Grandmother: Matilda Reginar Countess Saint Pol 2 x Great Grand Daughter of King Stephen I England
Great x 4 Grandmother: Marie Swabia Duchess Brabant
GrandMother: Maud Plantagenet Countess Ulster 
Great Grand Daughter of King Henry III of England
Great x 3 Grandfather: Patrick Chaworth 
Great x 2 Grandfather: Patrick Chaworth
Great x 1 Grandmother: Maud Chaworth
Great x 4 Grandfather: William Beauchamp 
Great x 3 Grandfather: William Beauchamp 9th Earl Warwick
Great x 4 Grandmother: Isabel Maudit
Great x 2 Grandmother: Isabella Beauchamp
Great x 4 Grandfather: John Fitzgeoffrey
Great x 3 Grandmother: Maud Fitzjohn Countess Warwick
Great x 4 Grandmother: Isabel Bigod 