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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Paternal Family Tree: Obrien Inchiquin
William O'Brien 2nd Earl Inchiquin and Margaret Boyle Countess Inchiquin were married. She by marriage Countess Inchiquin. She the daughter of Roger Boyle 1st Earl Orrery and Margaret Howard Countess Orrery. He the son of Murdough O'Brien 1st Earl Inchiquin and Elizabeth St Leger Countess Inchiquin.
William O'Brien 2nd Earl Inchiquin was was appointed the first Governor of Jamaica.
Before 1636 [his father] Murdough O'Brien 1st Earl Inchiquin (age 21) and [his mother] Elizabeth St Leger Countess Inchiquin were married.
Around 1640 William O'Brien 2nd Earl Inchiquin was born to [his father] Murdough O'Brien 1st Earl Inchiquin (age 26) and [his mother] Elizabeth St Leger Countess Inchiquin.
In May 1654 [his father] Murdough O'Brien 1st Earl Inchiquin (age 40) was created 1st Earl Inchiquin. [his mother] Elizabeth St Leger Countess Inchiquin by marriage Countess Inchiquin.
In 1662 [his son] William O'Brien 3rd Earl Inchiquin was born to William O'Brien 2nd Earl Inchiquin (age 22) and Margaret Boyle Countess Inchiquin. He married April 1691 his first cousin once removed Mary Villiers Countess Inchiquin and had issue.
On 9th September 1674 [his father] Murdough O'Brien 1st Earl Inchiquin (age 60) died. He was buried at St Mary's Cathedral, Limerick, County Limerick. His son William (age 34) succeeded 2nd Earl Inchiquin.
John Evelyn's Diary. 26th July 1680. My most noble and illustrious friend, the Earl of Ossory (age 46), espying me this morning after sermon in the privy gallery, calling to me, told me he was now going his journey (meaning to Tangier [Map], whither he was designed Governor, and General of the forces, to regain the losses we had lately sustained from the Moors, when Inchiquin (age 40) was Governor). I asked if he would not call at my house (as he always did whenever he went out of England on any exploit). He said he must embark at Portsmouth, Hampshire [Map], "wherefore let you and me dine together to-day; I am quite alone, and have something to impart to you; I am not well, shall be private, and desire your company"..
In 1685 [his mother] Elizabeth St Leger Countess Inchiquin died.
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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In April 1691 [his son] William O'Brien 3rd Earl Inchiquin (age 29) and [his daughter-in-law] Mary Villiers Countess Inchiquin were married. He the son of William O'Brien 2nd Earl Inchiquin (age 51) and Margaret Boyle Countess Inchiquin. They were first cousin once removed.
On 16th January 1692 William O'Brien 2nd Earl Inchiquin (age 52) died. His son William (age 30) succeeded 3rd Earl Inchiquin. [his daughter-in-law] Mary Villiers Countess Inchiquin by marriage Countess Inchiquin.
Kings Wessex: Great x 21 Grand Son of King Edmund "Ironside" I of England
Kings Gwynedd: Great x 17 Grand Son of Owain "Great" King Gwynedd
Kings Seisyllwg: Great x 22 Grand Son of Hywel "Dda aka Good" King Seisyllwg King Deheubarth
Kings Powys: Great x 17 Grand Son of Maredudd ap Bleddyn King Powys
Kings England: Great x 13 Grand Son of King Edward I of England
Kings Scotland: Great x 20 Grand Son of King Duncan I of Scotland
Kings Franks: Great x 27 Grand Son of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor
Kings France: Great x 22 Grand Son of Hugh I King of the Franks
Kings Duke Aquitaine: Great x 25 Grand Son of Ranulf I Duke Aquitaine
GrandFather: Dermod McMurrough O'Brien 5th Baron Inchiquin
William O'Brien 2nd Earl Inchiquin 13 x Great Grand Son of King Edward I of England
Great x 4 Grandfather: Ralph St Leger 
7 x Great Grand Son of King Edward I of England
Great x 3 Grandfather: Anthony St Leger 8 x Great Grand Son of King Edward I of England
Great x 4 Grandmother: Elizabeth Haute
Great x 2 Grandfather: William St Leger 9 x Great Grand Son of King Edward I of England
Great x 4 Grandfather: Hugh Warham
Great x 3 Grandmother: Agnes Warham
Great x 1 Grandfather: Warham St Leger 10 x Great Grand Son of King Edward I of England
GrandFather: William St Leger 11 x Great Grand Son of King Edward I of England
Mother: Elizabeth St Leger Countess Inchiquin 12 x Great Grand Daughter of King Edward I of England