Henry de Hastings of Ashill, Norfolk, was a supporter of Simon de Montfort in his rebellion against King Henry III. He led the Londoners at the Battle of Lewes in 1264, where he was taken prisoner, an
Seal of Edmund Hastings, 1st Baron Hastings, affixed to the Barons' Letter of 1301, which his brother also sealed. He displays the arms of Muireadhach I, Earl of Menteith (d. 1213): Barry wavy of six argent and azure (possibly or and gules)