He was immediately called upon to pay a sum nearly as large as his share of the scutage levied towards Richard's ransom, for the payment of which he was one of the hostages.
Mowbray was taken prisoner in the Battle of Lincoln (1217), and his estates bestowed upon William Marshal the younger; but he redeemed them by the surrender of the lordship of Bensted in Surrey to Hubert de Burgh, before the general restoration in September of that year.
[4] In January 1221, Mowbray assisted Hubert in driving his former co-executor, William of Aumâle, from his last stronghold at Bytham in Lincolnshire.
[4] Mowbray founded the chapel of St. Nicholas, with a chantry, at Thirsk, and was a benefactor of his grandfather's foundations at Furness Abbey and Newburgh, where, on his death in Axholme in or before March 1224, he was buried.
[3] William's eldest son and successor, Nigel, paid £500 for relief of his paternal lands, but left no issue by his wife Maud, and was succeeded by his younger brother Roger, who only came of age in 1241, and died in 1266.