Biography of Henry de Vere 18th Earl of Oxford 1593-1625
Paternal Family Tree: Vere
Maternal Family Tree: Jane Sneyd 1546-1616
On 03 Aug 1562 [his grandfather] John de Vere 16th Earl of Oxford (age 46) died. His son [his father] Edward de Vere 17th Earl of Oxford (age 12) succeeded 17th Earl of Oxford.
On 16 Dec 1571 a triple wedding was celebrated at Whitehall Palace [Map] ... with Queen Elizabeth I of England and Ireland (age 38) present ...
Edward Dudley 4th Baron Dudley (age 46) and Mary Howard Baroness Dudley (age 23) were married. She by marriage Baroness Sutton of Dudley. The difference in their ages was 23 years. He a great x 5 grandson of King Edward III of England. 
[his father] Edward de Vere 17th Earl of Oxford (age 21) and Anne Cecil Countess of Oxford (age 15) were married. She by marriage Countess of Oxford. He the son of John de Vere 16th Earl of Oxford and Margery Golding Countess of Oxford.
Edward Somerset 4th Earl of Worcester (age 21) and Elizabeth Hastings Countess of Worcester (age 25) were married. She by marriage Countess Worcester. She the daughter of Francis Hastings 2nd Earl Huntingdon and Catherine Pole Countess Huntingdon (age 60). He the son of William Somerset 3rd Earl of Worcester (age 45) and Christina North Countess of Worcester. They were third cousin once removed.
Before 27 Dec 1591 [his father] Edward de Vere 17th Earl of Oxford (age 41) and [his mother] Elizabeth Trentham Maid of Honour Countess of Oxford were married. She by marriage Countess of Oxford. She brought her husband a dowry of £1000 bequeathed to her in her father's will, payable at the rate of 500 marks a year for three years. He the son of John de Vere 16th Earl of Oxford and Margery Golding Countess of Oxford.
On 24 Feb 1593 Henry de Vere 18th Earl of Oxford was born to Edward de Vere 17th Earl of Oxford (age 42) and Elizabeth Trentham Maid of Honour Countess of Oxford.
On 24 Jun 1604 [his father] Edward de Vere 17th Earl of Oxford (age 54) died at his home In King Street Covent Garden. His son Henry de Vere 18th Earl of Oxford (age 11) succeeded 18th Earl of Oxford.
In 1609 [his mother] Elizabeth Trentham Maid of Honour Countess of Oxford purchased Hedingham Castle [Map] from her late husband's three daughters by his first wife so that Hedingham Castle [Map] remained in the estate of her son Henry de Vere 18th Earl of Oxford (age 15).
Around Dec 1612 [his mother] Elizabeth Trentham Maid of Honour Countess of Oxford died.
On 01 Jan 1624 Henry de Vere 18th Earl of Oxford (age 30) and Diana Cecil Countess of Oxford and Elgin (age 28) were married. She by marriage Countess of Oxford. She the daughter of William Cecil 2nd Earl Exeter (age 58) and Elizabeth Drury Countess Exeter (age 45). He the son of Edward de Vere 17th Earl of Oxford and Elizabeth Trentham Maid of Honour Countess of Oxford.
Around 1625 Unknown Painter. Portrait of Henry de Vere 18th Earl of Oxford (age 31).
In Jun 1625 Henry de Vere 18th Earl of Oxford (age 32) died. His second cousin Robert de Vere 19th Earl of Oxford (age 49) succeeded 19th Earl of Oxford.
On 12 Nov 1629 Thomas Bruce 1st Earl Elgin (age 30) and [his former wife] Diana Cecil Countess of Oxford and Elgin (age 33) were married. She the daughter of William Cecil 2nd Earl Exeter (age 63) and Elizabeth Drury Countess Exeter (age 51).
On 26 Feb 1658 [his former wife] Diana Cecil Countess of Oxford and Elgin (age 62) died.
Kings Wessex: Great x 16 Grand Son of King Edmund "Ironside" I of England
Kings Gwynedd: Great x 15 Grand Son of Owain "Great" King Gwynedd
Kings Seisyllwg: Great x 19 Grand Son of Hywel "Dda aka Good" King Seisyllwg King Deheubarth
Kings Powys: Great x 16 Grand Son of Maredudd ap Bleddyn King Powys
Kings England: Great x 8 Grand Son of King Edward "Longshanks" I of England
Kings Scotland: Great x 11 Grand Son of William "Lion" I King Scotland
Kings Franks: Great x 12 Grand Son of Louis VII King Franks
Kings France: Great x 13 Grand Son of Louis "Fat" VI King France
Great x 4 Grandfather: Richard de Vere 11th Earl of Oxford 5 x Great Grand Son of King Henry "Curtmantle" II of England
Great x 3 Grandfather: Robert de Vere 6 x Great Grand Son of King Henry "Curtmantle" II of England
Great x 4 Grandmother: Alice Sergeaux Countess Oxford
Great x 2 Grandfather: John de Vere 4 x Great Grand Son of King Edward "Longshanks" I of England
Great x 4 Grandfather: Hugh Courtenay
2 x Great Grand Son of King Edward "Longshanks" I of England
Great x 3 Grandmother: Joan Courtenay 3 x Great Grand Daughter of King Edward "Longshanks" I of England
Great x 1 Grandfather: John de Vere 15th Earl of Oxford 5 x Great Grand Son of King Edward "Longshanks" I of England
Great x 2 Grandmother: Alice Colbroke
GrandFather: John de Vere 16th Earl of Oxford 6 x Great Grand Son of King Edward "Longshanks" I of England
Great x 4 Grandfather: Thomas Trussell
Great x 3 Grandfather: William Trussell
Great x 2 Grandfather: Edward Trussell
Great x 1 Grandmother: Elizabeth Trussell Countess of Oxford 11 x Great Grand Daughter of King Henry I "Beauclerc" England
Great x 3 Grandfather: John Donne
Great x 2 Grandmother: Margaret Donne 10 x Great Grand Daughter of King Henry I "Beauclerc" England
Great x 4 Grandfather: Leonard Hastings
Great x 3 Grandmother: Elizabeth Hastings 9 x Great Grand Daughter of King Henry I "Beauclerc" England
Great x 4 Grandmother: Alice Camoys 8 x Great Grand Daughter of King Henry I "Beauclerc" England
Father: Edward de Vere 17th Earl of Oxford 7 x Great Grand Son of King Edward "Longshanks" I of England
GrandMother: Margery Golding Countess of Oxford
Henry de Vere 18th Earl of Oxford 8 x Great Grand Son of King Edward "Longshanks" I of England
Great x 1 Grandfather: Richard Trentham of Rocester Abbey
GrandFather: Thomas Trentham
Mother: Elizabeth Trentham Maid of Honour Countess of Oxford
Great x 1 Grandfather: William Sneyd of Bradwell Cheshire
GrandMother: Jane Sneyd