John de Vere, 12th Earl of Oxford, English politician (born 1408)

John de Vere, 12th Earl of Oxford, was the son of Richard de Vere, 11th Earl of Oxford, and his second wife, Alice Sergeaux (1386–1452). A Lancastrian loyalist during the latter part of his life, he was convicted of high treason and executed on Tower Hill on 26 February 1462.