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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Biography of Sancho IV King Castile IV King Leon 1258-1295

Paternal Family Tree: Ivrea

In 1249 [his father] Alfonso X King Castile X King Leon [aged 27] and [his mother] Violante Barcelona Queen Consort Castile Queen Consort Leon were married. She the daughter of [his grandfather] James I King Aragon [aged 40] and [his grandmother] Violant Árpád Queen Consort Aragon [aged 34]. He the son of Ferdinand III King Castile III King Leon [aged 50] and Elisabeth Hohenstaufen Queen Consort Castile Queen Consort Leon. They were half third cousins. He a great x 2 grandson of King Henry "Curtmantle" II of England.

On 13th May 1258 Sancho IV King Castile IV King Leon was born to [his father] Alfonso X King Castile X King Leon [aged 36] and [his mother] Violante Barcelona Queen Consort Castile Queen Consort Leon. He a great x 3 grandson of King Henry "Curtmantle" II of England.

In 1282 Sancho IV King Castile IV King Leon [aged 23] and Maria Molina Queen Consort Castile Queen Consort Leon were married. He the son of Alfonso X King Castile X King Leon [aged 60] and Violante Barcelona Queen Consort Castile Queen Consort Leon.

In 1283 [his daughter] Isabella of Castile Queen Consort Aragon was born to Sancho IV King Castile IV King Leon [aged 24] and [his wife] Maria Molina Queen Consort Castile Queen Consort Leon. She a great x 4 granddaughter of King Henry "Curtmantle" II of England. She married (1) 1st December 1291 her first cousin once removed James "The Just" II King Aragon, son of Peter III King Aragon and Constance Hohenstaufen Queen Consort Aragon (2) 1310 her fourth cousin once removed John III Duke Brittany.

On 2nd April 1284 [his father] Alfonso X King Castile X King Leon [aged 62] died. His son Sancho [aged 25] succeeded IV King Castile, IV King Leon. [his wife] Maria Molina Queen Consort Castile Queen Consort Leon by marriage Queen Consort Castile, Queen Consort Leon.

On 6th December 1285 [his son] Ferdinand IV King Castile IV King Leon was born to Sancho IV King Castile IV King Leon [aged 27] and [his wife] Maria Molina Queen Consort Castile Queen Consort Leon. He a great x 4 grandson of King Henry "Curtmantle" II of England. He married 23rd January 1302 his half first cousin once removed Constance Burgundy Queen Consort Castile Queen Consort Leon, daughter of Denis I King Portugal and Elisabeth Barcelona Queen Consort Portugal, and had issue.

In 1286 [his son] Alfonso Ivrea was born to Sancho IV King Castile IV King Leon [aged 27] and [his wife] Maria Molina Queen Consort Castile Queen Consort Leon. He a great x 4 grandson of King Henry "Curtmantle" II of England. He died aged five in 1291.

In 1288 [his son] Henry Ivrea was born to Sancho IV King Castile IV King Leon [aged 29] and [his wife] Maria Molina Queen Consort Castile Queen Consort Leon. He a great x 4 grandson of King Henry "Curtmantle" II of England. He died aged eleven in 1299.

In 1290 [his son] Peter Ivrea was born to Sancho IV King Castile IV King Leon [aged 31] and [his wife] Maria Molina Queen Consort Castile Queen Consort Leon. He a great x 4 grandson of King Henry "Curtmantle" II of England. He married his second cousin Maria Barcelona, daughter of James "The Just" II King Aragon and Blanche Capet Queen Consort Aragon.

In 1291 [his son] Alfonso Ivrea [aged 5] died.

On 1st December 1291 [his son-in-law] James "The Just" II King Aragon [aged 24] and Isabella of Castile Queen Consort Aragon [aged 8] were married. She by marriage Queen Consort Aragon. She the daughter of Sancho IV King Castile IV King Leon [aged 33] and Maria Molina Queen Consort Castile Queen Consort Leon. He the son of Peter III King Aragon and Constance Hohenstaufen Queen Consort Aragon [aged 42]. They were first cousin once removed. She a great x 4 granddaughter of King Henry "Curtmantle" II of England.

In 1292 [his son] Philip Ivrea was born to Sancho IV King Castile IV King Leon [aged 33] and [his wife] Maria Molina Queen Consort Castile Queen Consort Leon. He a great x 4 grandson of King Henry "Curtmantle" II of England.

In 1293 [his daughter] Beatrice Ivrea Queen Consort Portugal was born to Sancho IV King Castile IV King Leon [aged 34] and [his wife] Maria Molina Queen Consort Castile Queen Consort Leon. She a great x 4 granddaughter of King Henry "Curtmantle" II of England. She married 12th September 1309 her half first cousin once removed Alfonso "Brave" IV King Portugal, son of Denis I King Portugal and Elisabeth Barcelona Queen Consort Portugal, and had issue.

The History of William Marshal, Earl of Chepstow and Pembroke, Regent of England. Book 1 of 2, Lines 1-10152.

The History of William Marshal was commissioned by his son shortly after William’s death in 1219 to celebrate the Marshal’s remarkable life; it is an authentic, contemporary voice. The manuscript was discovered in 1861 by French historian Paul Meyer. Meyer published the manuscript in its original Anglo-French in 1891 in two books. This book is a line by line translation of the first of Meyer’s books; lines 1-10152. Book 1 of the History begins in 1139 and ends in 1194. It describes the events of the Anarchy, the role of William’s father John, John’s marriages, William’s childhood, his role as a hostage at the siege of Newbury, his injury and imprisonment in Poitou where he met Eleanor of Aquitaine and his life as a knight errant. It continues with the accusation against him of an improper relationship with Margaret, wife of Henry the Young King, his exile, and return, the death of Henry the Young King, the rebellion of Richard, the future King Richard I, war with France, the death of King Henry II, and the capture of King Richard, and the rebellion of John, the future King John. It ends with the release of King Richard and the death of John Marshal.

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On 25th April 1295 Sancho IV King Castile IV King Leon [aged 36] died. His son Ferdinand [aged 9] succeeded IV King Castile, IV King Leon.