Elizabeth de Vere, Countess of Oxford

Elizabeth Trussell
Countess of Oxford
Church of St Nicholas, burial place of Elizabeth Trussell, Countess of Oxford
Spouse(s)	John de Vere, 15th Earl of Oxford
Issue John de Vere, 16th Earl of Oxford Aubrey de Vere Robert de Vere Geoffrey de Vere Elizabeth de Vere Anne de Vere Frances de Vere
Noble family	De Vere (by marriage)
Father	Edward Trussell
Mother	Margaret Donne
Born	1496
Died	Before July 1527
Buried	Church of St Nicholas, Castle Hedingham, Essex

Elizabeth de Vere (née Trussell), Countess of Oxford (1496 – before July 1527) was an English noblewoman. As a young child she became a royal ward. She married John de Vere, 15th Earl of Oxford, and by him was mother of the 16th Earl and grandmother of Sir Francis and Sir Horace Vere, the 'fighting Veres'.

Elizabeth Trussell, born in 1496, was the daughter of Edward Trussell (c.1478 – 16 June 1499) of Elmesthorpe, Leicestershire, only son of Sir William Trussell (d. before 24 June 1480) of Elmesthorpe, Knight of the Body for King Edward IV, by Margaret Kene. The Trussells were a 'very ancient Warwickshire family'; Elizabeth's ancestor, Sir Warin Trussell, was of Billesley, Warwickshire.

Elizabeth Trussell's mother was Margaret Donne, the daughter of Sir John Donne (1450–1503) of Kidwelly, Carmarthenshire, and Elizabeth Hastings (c.1450 – 1508), daughter of Sir Leonard Hastings and Alice Camoys, and sister of William Hastings, 1st Baron Hastings. Sir John Donne's mother, Joan Scudamore, was the granddaughter of the Welsh rebel, Owain Glyndŵr.

Elizabeth had a brother, John Trussell (d.1499), to whom she was heir.

Elizabeth's father, Edward Trussell, had been a ward of William Hastings, 1st Baron Hastings, and at Hastings' death in 1483 was still a minor. In his will, Hastings expressed the wish that Trussell's wardship be purchased by Hastings' brother-in-law, Sir John Donne: