 In 1250, the year os his death, Frederick II of Hohenstaufen resided in the castle of Bisaccia, which he used for falconry trips on Monte Formicoso, on the border of Guardia, which he renamed Montesano.He was succeeded by his son, Manfred, who, on 30 October 1254, defeated here a papal army in the Battle of Guardia Lombardi, theretofore owned by the Marquis Bertoldo of Hohenburg.The Angevins, who succeeded the Hohenstaufen, assigned the fiefdom of Guardia to the family member and advisor Milone di Galata.