What type of surety was the Earl of Pembroke who participated in the battle at Lincoln castle in 1217?
William Marshal, 2nd Earl of Pembroke William Marshal, 2nd Earl of Pembroke (French:"Guillaume") (1190 – 6 April 1231) was a medieval English nobleman and was one of Magna Carta sureties. He fought during the First Barons' War and was present at the Battle of Lincoln (1217).
Thomas de Beauchamp, 12th Earl of Warwick Thomas de Beauchamp, 12th Earl of Warwick, KG (16 March 1338 – 8 April 1401) was an English medieval nobleman, and one of the primary opponents of Richard II.