Battle of Wakefield
By the time of the War of the Roses, Parr had formed close links with leading Yorkist Richard Neville, 5th Earl of Salisbury and when hostilities began joined him at the Battle of Ludford Bridge near Ludlow in 1459. After the Yorkists were defeated, he was forced to flee to Calais with Salisbury and was attainted in Parliament, but returned to fight at the Battle of Wakefield in 1460.