Philippa de Stafford (15th century) Parents Edmund Stafford, 5th Earl of Stafford Anne Plantagenet, Countess of Eu Children Siblings Humphrey Stafford, 1st Duke of Buckingham Lady Anne Stafford Henry Bourchier, 1st Earl of Essex William Bourchier, 9th Baron FitzWarin Thomas Bourchier John Bourchier, 1st Baron Berners Eleanor Bourchier