Henry de Vere, 18th Earl of Oxford English aristocrat, courtier and soldier (1593–1625) Parents Elizabeth Trentham, Countess of Oxford Edward de Vere, 17th Earl of Oxford Children Siblings Elizabeth de Vere, Countess of Derby Susan de Vere, Countess of Montgomery Bridget de Vere, Countess of Berkshire Edward de Vere Partners Diana Cecil