Aylmer / Andomar founded the Yorkshire and only surviving branch ofthe family. In 1174, accompanying the expedition against William the Lion, Andomar had the good fortune to make the Scottish monarch prisoner, by surprise; and conveying the royal captive to Henry II. He was deemed one of the most potent feudal lords in the time of Henry III. and accompanied Prince Edward to the Holy Land. Being constantly employed against the Welsh, his lands at Montalt were wrested from him by David, Prince of Wales, but restored in 1240. He m. Cecilia, second sister and one of the co-heirs of Hugh de Albini, Earl of Arundel, by whom he acquired the manor of Castle Rising, in Norfolk, with other extensive estates. To equip himself for Palestine this great baron conveyed, for a sum of money, a large portion of the woods and revenues which he possessed at Coventry, in right of Cecilia, his wife, to the monks of that place. He died in 1260, and was s. by his elder son, John the 4th Baron by tenure.