Paternal Family Tree: Beresford
Maternal Family Tree: Catherine Power Countess Tyrone 1701-1769
On 18th July 1717 [his father] Marcus Beresford 1st Earl Tyrone [aged 23] and [his mother] Catherine Power Countess Tyrone [aged 15] were married. She the daughter of [his grandfather] James Power 3rd Earl Tyrone. They were second cousin once removed.
In 16th April 1743 Archbishop William Beresford 1st Baron Decies was born to Marcus Beresford 1st Earl Tyrone [aged 48] and Catherine Power Countess Tyrone [aged 41].
In 1746 [his father] Marcus Beresford 1st Earl Tyrone [aged 51] was created 1st Earl Tyrone. [his mother] Catherine Power Countess Tyrone [aged 44] by marriage Countess Tyrone.
On 4th April 1763 [his father] Marcus Beresford 1st Earl Tyrone [aged 68] died in Tyrone House, Dublin.
On 16th June 1763 Archbishop William Beresford 1st Baron Decies [aged 20] and Elizabeth Fitzgibbon [aged 27] were married. He the son of Marcus Beresford 1st Earl Tyrone and Catherine Power Countess Tyrone [aged 61].
On 19th April 1769 [his brother] George de la Poer Beresford 1st Marquess Waterford [aged 34] and [his sister-in-law] Elizabeth Monck Marchioness Waterford [aged 27] were married. He the son of [his father] Marcus Beresford 1st Earl Tyrone and [his mother] Catherine Power Countess Tyrone [aged 67].
On 27th July 1769 [his mother] Catherine Power Countess Tyrone [aged 67] died.
On 20th January 1774 [his son] John Horsley Beresford 2nd Baron Decies was born to Archbishop William Beresford 1st Baron Decies [aged 30] and [his wife] Elizabeth Fitzgibbon [aged 38]. He married 26th July 1810 Charlotte Philadelphia Horsley and had issue.
On 21st May 1776 [his son] Reverend George de la Poer Beresford was born to Archbishop William Beresford 1st Baron Decies [aged 33] and [his wife] Elizabeth Fitzgibbon [aged 40]. He married before 28th July 1800 Susan Gorges and had issue.
Adam Murimuth's Continuation and Robert of Avesbury’s 'The Wonderful Deeds of King Edward III'
This volume brings together two of the most important contemporary chronicles for the reign of Edward III and the opening phases of the Hundred Years’ War. Written in Latin by English clerical observers, these texts provide a vivid and authoritative window into the political, diplomatic, and military history of fourteenth-century England and its continental ambitions. Adam Murimuth Continuatio's Chronicarum continues an earlier chronicle into the mid-fourteenth century, offering concise but valuable notices on royal policy, foreign relations, and ecclesiastical affairs. Its annalistic structure makes it especially useful for establishing chronology and tracing the development of events year by year. Complementing it, Robert of Avesbury’s De gestis mirabilibus regis Edwardi tertii is a rich documentary chronicle preserving letters, treaties, and official records alongside narrative passages. It is an indispensable source for understanding Edward III’s claim to the French crown, the conduct of war, and the mechanisms of medieval diplomacy. Together, these works offer scholars, students, and enthusiasts a reliable and unembellished account of a transformative period in English and European history. Essential for anyone interested in medieval chronicles, the Hundred Years’ War, or the reign of Edward III.
Available at Amazon in eBook and Paperback format.
In 1780 Archbishop William Beresford 1st Baron Decies [aged 36] was appointed Bishop of Dromore.
On 20th November 1780 [his son] William Beresford was born to Archbishop William Beresford 1st Baron Decies [aged 37] and [his wife] Elizabeth Fitzgibbon [aged 44]. He married 19th July 1804 Anna Bennett, daughter of Charles Bennet 4th Earl Tankerville and Emma Colebrooke Countess Tankerville.
In 1782 Archbishop William Beresford 1st Baron Decies [aged 38] was appointed Bishop of Ossory.
In 1789 [his brother] George de la Poer Beresford 1st Marquess Waterford [aged 53] was created 1st Marquess Waterford. [his sister-in-law] Elizabeth Monck Marchioness Waterford [aged 47] by marriage Marchioness Waterford.
In 1794 Archbishop William Beresford 1st Baron Decies [aged 50] was appointed Archbishop of Tuam.
On 12th June 1795 [his brother-in-law] John Fitzgibbon 1st Earl of de Clare [aged 47] was created 1st Earl Clare.
Before 28th July 1800 [his son] Reverend George de la Poer Beresford [aged 24] and [his daughter-in-law] Susan Gorges [aged 23] were married.
On 3rd December 1800 [his brother] George de la Poer Beresford 1st Marquess Waterford [aged 65] died. His son [his nephew] Henry [aged 28] succeeded 2nd Marquess Waterford.
On 28th January 1802 [his brother-in-law] John Fitzgibbon 1st Earl of de Clare [aged 54] died. His son John [aged 9] succeeded 2nd Earl Clare.
On 19th July 1804 [his son] William Beresford [aged 23] and [his daughter-in-law] Anna Bennett [aged 29] were married. She the daughter of Charles Bennet 4th Earl Tankerville [aged 60] and Emma Colebrooke Countess Tankerville [aged 52].
In 1807 [his wife] Elizabeth Fitzgibbon [aged 71] died.
On 26th July 1810 [his son] John Horsley Beresford 2nd Baron Decies [aged 36] and [his daughter-in-law] Charlotte Philadelphia Horsley [aged 36] were married.
On 22nd December 1812 Archbishop William Beresford 1st Baron Decies [aged 69] was created 1st Baron Decies of Decies in Waterford.
On 6th September 1819 Archbishop William Beresford 1st Baron Decies [aged 76] died. His son John [aged 45] succeeded 2nd Baron Decies of Decies in Waterford.
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.
Available at Amazon in eBook and Paperback format.
[his daughter] Louisa Beresford Viscountess Beresford was born to Archbishop William Beresford 1st Baron Decies and Elizabeth Fitzgibbon. She married 1832 her first cousin General William Carr Beresford 1st Viscount Beresford, son of George de la Poer Beresford 1st Marquess Waterford.
Kings Wessex: Great x 21 Grand Son of King Edmund "Ironside" I of England
Kings Gwynedd: Great x 19 Grand Son of Owain "Great" King Gwynedd
Kings Seisyllwg: Great x 23 Grand Son of Hywel "Dda aka Good" King Seisyllwg King Deheubarth
Kings Powys: Great x 20 Grand Son of Maredudd ap Bleddyn King Powys
Kings Godwinson: Great x 21 Grand Son of King Harold II of England
Kings England: Great x 11 Grand Son of King Edward III of England
Kings Scotland: Great x 17 Grand Son of King William I of Scotland
Kings France: Great x 13 Grand Son of King Philip IV of France
Kings Duke Aquitaine: Great x 25 Grand Son of Ranulf I Duke Aquitaine
Kings Spain: Great x 17 Grand Son of Alfonso VII King Castile VII King Leon
Great x 4 Grandfather: Michael Beresford 
Great x 3 Grandfather: Tristram Beresford
Great x 2 Grandfather: Tristram Beresford 1st Baronet
Great x 1 Grandfather: Randal Beresford 2nd Baronet
Grandfather: Tristram Beresford 3rd Baronet 9 x Great Grandson of King Edward III of England
Great x 3 Grandfather: Robert Annesley
Great x 2 Grandfather: Francis Annesley 1st Viscount Valentia
Great x 1 Grandmother: Catherine Annesley Lady Beresford 8 x Great Granddaughter of King Edward III of England
Great x 4 Grandfather: Thomas Stanhope 
5 x Great Grandson of King Edward III of England
Great x 3 Grandfather: John Stanhope 6 x Great Grandson of King Edward III of England
Great x 4 Grandmother: Margaret Port
Great x 2 Grandmother: Jane Stanhope Viscountess Valentia 7 x Great Granddaughter of King Edward III of England
Great x 4 Grandfather: Thomas Trentham
Great x 3 Grandmother: Catherine Trentham
Great x 4 Grandmother: Jane Sneyd
father: Marcus Beresford 1st Earl Tyrone 10 x Great Grandson of King Edward III of England
Archbishop William Beresford 1st Baron Decies 11 x Great Grandson of King Edward III of England
Great x 4 Grandfather: Richard Power 4th Baron Power 8 x Great Grandson of King Edward I of England
Great x 3 Grandfather: John Power 9 x Great Grandson of King Edward I of England
Great x 2 Grandfather: John Power 10 x Great Grandson of King Edward I of England
Great x 4 Grandfather: David Barry 5th Viscount Buttevant 11 x Great Grandson of King Edward I of England
Great x 3 Grandmother: Eleanor Barry Countess Ormonde and Ossory 12 x Great Granddaughter of King Edward I of England
Great x 1 Grandfather: Richard Power 1st Earl Tyrone 11 x Great Grandson of King Edward I of England
Grandfather: James Power 3rd Earl Tyrone 11 x Great Grandson of King Edward III of England
Great x 4 Grandfather: Robert Annesley
Great x 3 Grandfather: Francis Annesley 1st Viscount Valentia
Great x 2 Grandfather: Arthur Annesley 1st Earl Annesley 9 x Great Grandson of King Edward III of England
Great x 4 Grandfather: John Philipps 1st Baronet
Great x 3 Grandmother: Dorothy Philipps 8 x Great Granddaughter of King Edward III of England
Great x 4 Grandmother: Anne Elizabeth Perrot Lady Philips 7 x Great Granddaughter of King Edward III of England
Great x 1 Grandmother: Dorothy Annesley Countess Tyrone 10 x Great Granddaughter of King Edward III of England
Great x 4 Grandfather: James Altham
Great x 3 Grandfather: James Altham of Oxhey
Great x 4 Grandmother: Margaret Skinner
Great x 2 Grandmother: Elizabeth Altham Countess Anglesey
mother: Catherine Power Countess Tyrone 12 x Great Granddaughter of King Edward III of England