Paternal Family Tree: Colley
Maternal Family Tree: Anne Hill Countess Mornington 1742-1831
On 6th February 1759 [his father] Garrett Wellesley 1st Earl Mornington (age 23) and [his mother] Anne Hill Countess Mornington (age 16) were married. She by marriage Baroness Mornington.
On 20th January 1773 Henry Wellesley 1st Baron Cowley was born to [his father] Garrett Wellesley 1st Earl Mornington (age 37) and [his mother] Anne Hill Countess Mornington (age 30).
In 1781 William Pole of Ballyfin in Ireland (age 68) died. His mother's great-nephew [his brother] William Wellesley aka Wellesley-Pole 3rd Earl Mornington (age 17) inherited his estates at which time he changed his name from Wellesley to Wellesly-Pole.
On 22nd May 1781 [his father] Garrett Wellesley 1st Earl Mornington (age 45) died at Kensington. He was buried at Grosvenor Chapel, Mayfair. His son [his brother] Richard (age 20) succeeded 2nd Earl Mornington, 2nd Viscount Wellesley of Dangan Castle.
In 1784 [his brother] William Wellesley aka Wellesley-Pole 3rd Earl Mornington (age 20) and [his sister-in-law] Katherine Forbes Countess Mornington (age 22) were married. He the son of [his father] Garrett Wellesley 1st Earl Mornington and [his mother] Anne Hill Countess Mornington (age 41).
On 29th November 1794 [his brother] Richard Wellesley 1st Marquess Wellesley (age 34) and [his sister-in-law] Hyacinthe Gabrielle Roland Marchioness Wellesley (age 28) were married at St George's Church, Hanover Square. She by marriage Countess Mornington. He the son of [his father] Garrett Wellesley 1st Earl Mornington and [his mother] Anne Hill Countess Mornington (age 52).
In 1799 [his brother] Richard Wellesley 1st Marquess Wellesley (age 38) was created 1st Marquess Wellesley. [his sister-in-law] Hyacinthe Gabrielle Roland Marchioness Wellesley (age 33) by marriage Marchioness Wellesley.
On 20th September 1803 Henry Wellesley 1st Baron Cowley (age 30) and Charlotte Cadogan Marchioness Anglesey (age 22) were married. She the daughter of Charles Sloane Cadogan 1st Earl Cadogan (age 74) and Mary Churchill Countess Cadogan (age 45). He the son of Garrett Wellesley 1st Earl Mornington and Anne Hill Countess Mornington (age 61).
William of Worcester's Chronicle of England
William of Worcester, born around 1415, and died around 1482 was secretary to John Fastolf, the renowned soldier of the Hundred Years War, during which time he collected documents, letters, and wrote a record of events. Following their return to England in 1440 William was witness to major events. Twice in his chronicle he uses the first person: 1. when writing about the murder of Thomas, 7th Baron Scales, in 1460, he writes '… and I saw him lying naked in the cemetery near the porch of the church of St. Mary Overie in Southwark …' and 2. describing King Edward IV's entry into London in 1461 he writes '… proclaimed that all the people themselves were to recognize and acknowledge Edward as king. I was present and heard this, and immediately went down with them into the city'. William’s Chronicle is rich in detail. It is the source of much information about the Wars of the Roses, including the term 'Diabolical Marriage' to describe the marriage of Queen Elizabeth Woodville’s brother John’s marriage to Katherine, Dowager Duchess of Norfolk, he aged twenty, she sixty-five or more, and the story about a paper crown being placed in mockery on the severed head of Richard, 3rd Duke of York.
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On 17th June 1804 [his son] Henry Richard Charles Wellesley 1st Earl Cowley was born to Henry Wellesley 1st Baron Cowley (age 31) and [his wife] Charlotte Cadogan Marchioness Anglesey (age 22) at Hertford Street.
On 2nd February 1806 [his son] William Henry George Wellesley was born to Henry Wellesley 1st Baron Cowley (age 33) and [his wife] Charlotte Cadogan Marchioness Anglesey (age 24).
On 10th April 1806 [his brother] Arthur Wellesley 1st Duke Wellington (age 36) and [his sister-in-law] Catherine "Kitty" Pakenham Duchess Wellington (age 33) were married at Dublin [Map]. He the son of [his father] Garrett Wellesley 1st Earl Mornington and [his mother] Anne Hill Countess Mornington (age 63).
On 3rd April 1807 [his father-in-law] Charles Sloane Cadogan 1st Earl Cadogan (age 78) died. His son [his brother-in-law] Charles (age 57) succeeded 2nd Earl Cadogan, 2nd Viscount Chelsea, 4th Baron Cadogan. He was by then a lunatic.
In 1808 [his daughter] Charlotte Arbuthnot Wellesley Baroness Ebury was born to Henry Wellesley 1st Baron Cowley (age 34) and [his wife] Charlotte Cadogan Marchioness Anglesey (age 26). She married 1831 Robert Grosvenor 1st Baron Ebury, son of Robert Grosvenor 1st Marquess Westminster and Eleanor Egerton Marchioness Westminster, and had issue.
In 1809 [his son] Gerald Wellesley was born to Henry Wellesley 1st Baron Cowley (age 35) and [his wife] Charlotte Cadogan Marchioness Anglesey (age 27). He married 16th September 1856 Magdalen Robinson Montagu, daughter of Henry Robinson Montagu 6th Baron Rokeby.
Between 27th July 1809 and 28th July 1809 the Battle of Talavera, part of the Peninsular War, was fought between an Anglo Spanish army commanded by [his brother] Arthur Wellesley 1st Duke Wellington (age 40) against the French. The French army withdrew at night after several of its attacks had been repulsed. Following the battle Arthur Wellesley 1st Duke Wellington was created 1st Viscount Wellington of Talavera.
Hugh Gough 1st Viscount Gough (age 29) commanded the 2nd Battalion of the 87th (Royal Irish Fusiliers) Regiment of Foot.
General Henry Fane (age 30) commanded the 3rd Prince of Wales Dragoon Guards, 4th Queen's Own Dragoons.
Charles Henry Farrington 2nd Baronet (age 14) fought.
In 1810 [his brother] Richard Wellesley 1st Marquess Wellesley (age 49) was appointed 635th Knight of the Garter by King George III of Great Britain and Ireland (age 71).
In 1810 Henry Wellesley 1st Baron Cowley (age 36) and Charlotte Cadogan Marchioness Anglesey (age 28) were divorced by an Act of Parliament following her elopement with Henry Paget (age 41). Following the divorce, Wellesley was awarded £20,000 plus costs in damages against Paget.
Chronicle of Abbot Ralph of Coggeshall
The Chronicle of Abbot Ralph of Coggeshall (Chronicon Anglicanum) is an indispensable medieval history that brings to life centuries of English and European affairs through the eyes of a learned Cistercian monk. Ralph of Coggeshall, abbot of the Abbey of Coggeshall in Essex in the early 13th century, continued and expanded his community’s chronicle, documenting events from the Norman Conquest of 1066 into the tumultuous reign of King Henry III. Blending eyewitness testimony, careful compilation, and the monastic commitment to record-keeping, this chronicle offers a rare narrative of political intrigue, royal power struggles, and social upheaval in England and beyond. Ralph’s work captures the reigns of pivotal figures such as Richard I and King John, providing invaluable insights into their characters, decisions, and the forces that shaped medieval rule. More than a simple annal, Chronicon Anglicanum conveys the texture of medieval life and governance, making it a rich source for scholars and readers fascinated by English history, monastic authorship, and the shaping of the medieval world.
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On 29th November 1810 Henry William Paget 1st Marquess Anglesey (age 42) and Caroline Elizabeth Villiers Duchess Argyll (age 35) were divorced by an act of Parliament as a result of his having had an affair with [his former wife] Charlotte Cadogan Marchioness Anglesey (age 29) whose husband Henry Wellesley 1st Baron Cowley (age 37) also sought a divorce.
After 19th December 1810 Henry William Paget 1st Marquess Anglesey (age 42) and [his former wife] Charlotte Cadogan Marchioness Anglesey (age 29) were married. She the daughter of [his former father-in-law] Charles Sloane Cadogan 1st Earl Cadogan and Mary Churchill Countess Cadogan (age 52). He the son of Henry Bayly-Paget 1st Earl Uxbridge (age 66) and Jane Champagné Countess Uxbridge (age 68).
On 22nd July 1812 the Battle of Salamanca was fought at which an Anglo-Portuguese army under the [his brother] Earl of Wellington (age 43) defeated Marshal Auguste Marmont's French forces at Arapiles [Map].
Brother General Thomas Bradford (age 34) and Lieutenant-Colonel Henry Hollis Bradford (age 31) fought.
Major-General John Le Marchant (age 46) was killed in action. Wellington is reported as saying to Le Marchant that he must take the first favourable opportunity to engage the enemy's infantry, "You must then charge at all hazards" was his final instruction. Following up the attack of the 5th Infantry Division Le Marchant led the 3rd and 4th Dragoons and the 5th Dragoon Guards in what was probably the most destructive charge made by a single brigade of cavalry in the whole Napoleonic period. The left wing of the French army were on the point of being defeated by the 3rd and 5th divisions of Anglo-Portuguese infantry when Le Marchant's dragoons charged in and destroyed battalion after battalion. Many of the French infantrymen sought the protection of the British infantry to escape the sabres of the dragoons. Le Marchant, knowing he had achieved a magnificent success, was leading a squadron against the last of the formed French infantry when he was shot and his spine broken. See Fletcher's "Galloping at Everything: The British Cavalry in the Peninsula and at Waterloo 1808-15". Spellmount, Staplehurst. ISBN 1-86227-016-3. 1999, pp. 185–188.
In 1813 [his brother] Arthur Wellesley 1st Duke Wellington (age 43) was appointed 640th Knight of the Garter by King George IV of Great Britain and Ireland (age 50) during the Regency.
On 11th May 1814 [his brother] Arthur Wellesley 1st Duke Wellington (age 45) was created 1st Duke Wellington. [his sister-in-law] Catherine "Kitty" Pakenham Duchess Wellington (age 41) by marriage Duchess Wellington.
On 4th July 1815 Henry William Paget 1st Marquess Anglesey (age 47) was created 1st Marquess Anglesey. [his former wife] Charlotte Cadogan Marchioness Anglesey (age 33) by marriage Marchioness Anglesey.
Before 1821 Henry Wellesley 1st Baron Cowley (age 47) and Georgiana Charlotte Augusta Cecil Baroness Cowley were married. She the daughter of James Cecil 1st Marquess Salisbury (age 72) and Mary Amelia Hill Marchioness Salisbury (age 70). He the son of Garrett Wellesley 1st Earl Mornington and Anne Hill Countess Mornington (age 78). They were second cousin once removed.
On 2nd February 1821 [his brother-in-law] James Brownlow William Gascoyne-Cecil 2nd Marquess Salisbury (age 29) and Frances Mary Gascoyne Marchioness Salisbury (age 15) were married. He the son of [his father-in-law] James Cecil 1st Marquess Salisbury (age 72) and [his mother-in-law] Mary Amelia Hill Marchioness Salisbury (age 70).
In 1822 George Nugent 1st Marquess Westmeath (age 36) was created 1st Marquess Westmeath. [his sister-in-law] Emily Anne Bennet Elizabeth Cecil Marchioness Westmeath (age 32) by marriage Marchioness Westmeath.
On 29th June 1822 Henry Somerset 7th Duke Beaufort (age 30) and Emily Frances Smith Duchess Beaufort (age 22) were married. She being the younger half-sister of his first wife Georgiana Frederica Fitzroy both of whom's mother was [his sister] Anne Wellesley (age 54) sister of [his brother] Arthur Wellesley 1st Duke Wellington (age 53). An example of a man marrying two sisters, albeit in this case half-sisters. He the son of Henry Charles Somerset 6th Duke Beaufort (age 55) and Charlotte Sophia Leveson-Gower Duchess Beaufort (age 51).
Chronicle of Walter of Guisborough
A canon regular of the Augustinian Guisborough Priory, Yorkshire, formerly known as The Chronicle of Walter of Hemingburgh, describes the period from 1066 to 1346. Before 1274 the Chronicle is based on other works. Thereafter, the Chronicle is original, and a remarkable source for the events of the time. This book provides a translation of the Chronicle from that date. The Latin source for our translation is the 1849 work edited by Hans Claude Hamilton. Hamilton, in his preface, says: 'In the present work we behold perhaps one of the finest samples of our early chronicles, both as regards the value of the events recorded, and the correctness with which they are detailed; Nor will the pleasing style of composition be lightly passed over by those capable of seeing reflected from it the tokens of a vigorous and cultivated mind, and a favourable specimen of the learning and taste of the age in which it was framed.'
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On 13th June 1823 [his father-in-law] James Cecil 1st Marquess Salisbury (age 74) died. His son [his brother-in-law] James (age 32) succeeded 2nd Marquess Salisbury in Wiltshire, 8th Earl Salisbury. Frances Mary Gascoyne Marchioness Salisbury (age 17) by marriage Marchioness Salisbury in Wiltshire.
On 29th October 1825 [his brother] Richard Wellesley 1st Marquess Wellesley (age 65) and [his sister-in-law] Marianne Caton Marchioness Wellesley (age 37) were married. She by marriage Marchioness Wellesley. The difference in their ages was 27 years. He the son of [his father] Garrett Wellesley 1st Earl Mornington and [his mother] Anne Hill Countess Mornington (age 83).
She one of the four Caton sisters, daughters of Richard Caton (age 62), a merchant from Baltimore, the three eldest, known as the "The Three American Graces", married European husbands. Only the fourth daughter Emily Caton (age 30) had children.
Marianne Caton Marchioness Wellesley married Richard Wellesley 1st Marquess Wellesley,
Elizabeth Caton Baroness Stafford (age 35) married George William Stafford-Jerningham 8th Baron Stafford (age 54),
Louisa Catharine Caton Duchess Leeds (age 32) married firstly Felton Elwell Hervey-Bathurst 1st Baronet and secondly Francis Godolphin Osborne 7th Duke Leeds (age 27).
Emily Caton married Consul John MacTavish (age 38).
In January 1828 Henry Wellesley 1st Baron Cowley (age 54) was created 1st Baron Cowley. [his wife] Georgiana Charlotte Augusta Cecil Baroness Cowley by marriage Baroness Cowley.
In 1831 [his son-in-law] Robert Grosvenor 1st Baron Ebury (age 29) and [his daughter] Charlotte Arbuthnot Wellesley Baroness Ebury (age 23) were married. She the daughter of Henry Wellesley 1st Baron Cowley (age 57) and [his former wife] Charlotte Cadogan Marchioness Anglesey (age 49). He the son of Robert Grosvenor 1st Marquess Westminster (age 63) and Eleanor Egerton Marchioness Westminster (age 60).
On 10th September 1831 [his mother] Anne Hill Countess Mornington (age 89) died at Henrietta Street Covent Garden. She was buried at Grosvenor Chapel, Mayfair.
On 23rd December 1832 [his former brother-in-law] Charles Henry Sloane 2nd Earl Cadogan (age 83) died unmarried in Enfield [Map]. His half brother [his former brother-in-law] George (age 49) succeeded 3rd Earl Cadogan, 3rd Viscount Chelsea, 5th Baron Cadogan.
In 1841 [his brother-in-law] James Brownlow William Gascoyne-Cecil 2nd Marquess Salisbury (age 49) was appointed Lord Lieutenant of Middlesex.
On 26th September 1842 [his brother] Richard Wellesley 1st Marquess Wellesley (age 82) died at Kingston House Knightsbridge, Kensington. His brother [his brother] William (age 79) succeeded 3rd Earl Mornington, 3rd Viscount Wellesley of Dangan Castle. [his sister-in-law] Katherine Forbes Countess Mornington (age 81) by marriage Countess Mornington.
Chronicle of Geoffrey le Baker of Swinbroke
Baker was a secular clerk from Swinbroke, now Swinbrook, an Oxfordshire village two miles east of Burford. His Chronicle describes the events of the period 1303-1356: Gaveston, Bannockburn, Boroughbridge, the murder of King Edward II, the Scottish Wars, Sluys, Crécy, the Black Death, Winchelsea and Poitiers. To quote Herbert Bruce 'it possesses a vigorous and characteristic style, and its value for particular events between 1303 and 1356 has been recognised by its editor and by subsequent writers'. The book provides remarkable detail about the events it describes. Baker's text has been augmented with hundreds of notes, including extracts from other contemporary chronicles, such as the Annales Londonienses, Annales Paulini, Murimuth, Lanercost, Avesbury, Guisborough and Froissart to enrich the reader's understanding. The translation takes as its source the 'Chronicon Galfridi le Baker de Swynebroke' published in 1889, edited by Edward Maunde Thompson.
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On 22nd February 1845 [his brother] William Wellesley aka Wellesley-Pole 3rd Earl Mornington (age 81) died. His son [his nephew] William (age 56) succeeded 4th Earl Mornington, 4th Viscount Wellesley of Dangan Castle. Helena Paterson Bligh Countess Mornington by marriage Countess Mornington.
On 27th April 1847 Henry Wellesley 1st Baron Cowley (age 74) died. His son Henry (age 42) succeeded 2nd Baron Cowley.
On 8th July 1853 [his former wife] Charlotte Cadogan Marchioness Anglesey (age 71) died.
In 1860 [his former wife] Georgiana Charlotte Augusta Cecil Baroness Cowley died.
Great x 1 Grandfather: Henry Colley
GrandFather: Richard Colley aka Wesley 1st Baron Mornington
Great x 2 Grandfather: William Ussher of Bridgefoot
Great x 1 Grandmother: Mary Ussher
Father: Garrett Wellesley 1st Earl Mornington
GrandMother: Elizabeth Sale
Henry Wellesley 1st Baron Cowley
Great x 4 Grandfather: Moyses Hill Marshall of Ulster
Great x 3 Grandfather: Arthur Hill
Great x 2 Grandfather: William Hill
Great x 1 Grandfather: Michael Hill
GrandFather: Arthur Hill aka Hill-Trevor 1st Viscount Dungannon
Great x 4 Grandfather: Edward Trevor 
Great x 3 Grandfather: John Trevor
Great x 2 Grandfather: John Trevor
Great x 1 Grandmother: Anne Trevor
Mother: Anne Hill Countess Mornington