Biography of William Courtenay 1st Earl Devon 1475-1511
Paternal Family Tree: Courtenay
In or before 1475 [his father] Edward Courtenay 1st Earl Devon (age 15) and [his mother] Elizabeth Courtenay were married. They were third cousin once removed. He a great x 4 grandson of King Edward I of England. She a great x 5 granddaughter of King Edward I of England.
In 1475 William Courtenay 1st Earl Devon was born to Edward Courtenay 1st Earl Devon (age 16) and Elizabeth Courtenay.
In Oct 1495 William Courtenay 1st Earl Devon (age 20) and Catherine York Countess Devon (age 16) were married. She the daughter of King Edward IV of England and Elizabeth Woodville Queen Consort England. He the son of Edward Courtenay 1st Earl Devon (age 36) and Elizabeth Courtenay. He a great x 5 grandson of King Edward I of England.
Around 1496 [his son] Henry Courtenay 1st Marquess Exeter was born to William Courtenay 1st Earl Devon (age 21) and [his wife] Catherine York Countess Devon (age 16). He a grandson of King Edward IV of England.
Around 1497 [his son] Edward Courtenay was born to William Courtenay 1st Earl Devon (age 22).
Polydore Vergil. Around 10 Sep 1497. Hearing the news, the king (age 40) was no slower in leading an army to Exeter, Devon [Map] than the situation required. He sent ahead a goodly number of light horse to let everyone know of his approach. For meanwhile, under the leadership of [his father] Edward Courteney Earl of Devonshire (age 38) and his son William (age 22), an excellent and very brave young man, every noble hastened to come to the aid of Exeter, Devon [Map] with a great company of soldiers. Among these were Thomas Trenchard, Edmund Carew, Thomas Fulford, William Courteney, John Halliwell, John Croker, Walter Courteney, Peter Edgercombe (age 28), and William St. Maurice. When these things came to Peter's (age 23) ears, he abandoned the siege and removed to Taunton, Somerset [Map], the nearest town. There he reviewed his army and drew it up for the coming battle, although it later came to light that he had no great trust in that army. A goodly part were armed only with swords, otherwise unarmed, and ignorant of how to fight.
Around 1499 [his daughter] Margaret Courtenay Countess of Worcester was born to William Courtenay 1st Earl Devon (age 24) and [his wife] Catherine York Countess Devon (age 19). She a granddaughter of King Edward IV of England.
On 20 Sep 1501 [his brother-in-law] Thomas Grey 1st Marquess Dorset (age 46) died. On 20 Sep 1501 His son Thomas Grey 2nd Marquess Dorset (age 24) succeeded 2nd Marquess Dorset, 2nd Earl Huntingdon, 8th Baron Ferrers of Groby. Eleanor St John Marchioness Dorset by marriage Marchioness Dorset.
In Feb 1504 William Courtenay 1st Earl Devon (age 29) was attainted and imprisoned at Tower of London [Map] for supposedly having supported Edmund Pole 3rd Duke of Suffolk (age 33), a Yorkist claimant, in his claim to the throne; William's wife was [his wife] Catherine York Countess Devon (age 24).
Around 27 May 1509 [his father] Edward Courtenay 1st Earl Devon (age 50) died. Earl Devon, Baron Okehampton, Baron Courtenay forfeit since his son William Courtenay 1st Earl Devon (age 34) had been attainted in Feb 1504.
On 10 May 1511 William Courtenay 1st Earl Devon (age 36) was created 1st Earl Devon. He died a month later. [his wife] Catherine York Countess Devon (age 31) by marriage Countess Devon.
On 09 Jun 1511 William Courtenay 1st Earl Devon (age 36) died of pleurisy. His son [his son] Henry Courtenay 1st Marquess Exeter (age 15) succeeded 2nd Earl Devon. His widow [his wife] Catherine York Countess Devon (age 31) subsequently took a vow of celibacy in the presence of Bishop Richard Fitzjames on 13 Jul 1511.
On 15 Nov 1527 [his former wife] Catherine York Countess Devon (age 48) died at Tiverton Castle [Map]. She was buried at St Peter's Church Tiverton, Devon.
Kings Wessex: Great x 13 Grand Son of King Edmund "Ironside" I of England
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Kings England: Great x 5 Grand Son of King Edward I of England
Kings Scotland: Great x 12 Grand Son of King Duncan I of Scotland
Kings Franks: Great x 9 Grand Son of Louis VII King Franks
Kings France: Great x 13 Grand Son of Robert "Pious" II King France
Great x 4 Grandfather: Hugh Courtenay 9th Earl Devon 5 x Great Grand Son of King Henry I "Beauclerc" England
Great x 3 Grandfather: Hugh Courtenay 10th Earl Devon 6 x Great Grand Son of King Henry I "Beauclerc" England
Great x 4 Grandmother: Agnes St John Countess Devon
Great x 2 Grandfather: Edward Courtenay Great Grand Son of King Edward I of England
Great x 4 Grandfather: Humphrey Bohun 4th Earl Hereford 3rd Earl Essex 
Great x 3 Grandmother: Margaret Bohun Countess Devon Grand Daughter of King Edward I of England
Great x 4 Grandmother: Princess Elizabeth of Rhuddlan Countess Essex, Hereford and Holland 
Daughter of King Edward I of England
Great x 1 Grandfather: Hugh Courtenay 2 x Great Grand Son of King Edward I of England
GrandFather: Hugh Courtenay 3 x Great Grand Son of King Edward I of England
Father: Edward Courtenay 1st Earl Devon 4 x Great Grand Son of King Edward I of England
GrandMother: Margaret Carminow
William Courtenay 1st Earl Devon 5 x Great Grand Son of King Edward I of England
Great x 4 Grandfather: Hugh Courtenay 10th Earl Devon 6 x Great Grand Son of King Henry I "Beauclerc" England
Great x 3 Grandfather: Philip Courtenay Great Grand Son of King Edward I of England
Great x 4 Grandmother: Margaret Bohun Countess Devon Grand Daughter of King Edward I of England
Great x 2 Grandfather: John Courtenay 2 x Great Grand Son of King Edward I of England
Great x 3 Grandmother: Anne Wake 
Great x 1 Grandfather: Philip Courtenay 3 x Great Grand Son of King Edward I of England
Great x 3 Grandfather: Richard Champernoun
Great x 2 Grandmother: Joan Champernoun 8 x Great Grand Daughter of King Henry I "Beauclerc" England
Great x 4 Grandfather: Thomas Astley 3rd Baron Astley
Great x 3 Grandmother: Alice Astley 7 x Great Grand Daughter of King Henry I "Beauclerc" England
Great x 4 Grandmother: Elizabeth Beauchamp Baroness Astley 
6 x Great Grand Daughter of King Henry I "Beauclerc" England
GrandFather: Philip Courtenay 4 x Great Grand Son of King Edward I of England
Great x 4 Grandfather: Walter Hungerford 
Great x 3 Grandfather: Thomas Hungerford
Great x 4 Grandmother: Elizabeth Fitzjohn
Great x 2 Grandfather: Walter Hungerford 1st Baron Hungerford
Great x 4 Grandfather: Edmund Hussey 
Great x 3 Grandmother: Joan Hussey
Great x 1 Grandmother: Elizabeth Hungerford 9 x Great Grand Daughter of King Henry I "Beauclerc" England
Great x 4 Grandfather: Hugh Peverell
Great x 3 Grandfather: Thomas Peverell
Great x 2 Grandmother: Eleanor or Catherine Peverell 8 x Great Grand Daughter of King Henry I "Beauclerc" England
Great x 4 Grandfather: Thomas Courtenay 6 x Great Grand Son of King Henry I "Beauclerc" England
Great x 3 Grandmother: Margaret Courtenay 7 x Great Grand Daughter of King Henry I "Beauclerc" England
Great x 4 Grandmother: Muriel Moels
Mother: Elizabeth Courtenay 5 x Great Grand Daughter of King Edward I of England
GrandMother: Elizabeth Hingeston