Campion, Edmond, Jesuit, was born in 1540 in London. Educated at Christ's Hospital and at Oxford, he was admitted to holy orders, being ordained deacon in 1567. Subsequently, however, he became a Jesuit and attacked Protestantism, particularly in his Decem Rationes. In 1581 he was arrested and thrown into the Tower, being tried for high treason, and executed at Tyburn in the December of the same year. Amongst his writings was a History of Ireland, written in 1569.