From 1436, Count René I (the "good King René") tried to repopulate Provence. He created the Barony of Grimaud and appealed to the Genoan Raphael de Garezzio, a wealthy gentleman who had sent a fleet of caravels carrying 60 Genoese families to the area. In return, Count René promised to exempt the citizens from taxation. On 14 February 1470, Jean de Cossa, Baron of Grimaud and Grand Seneschal of Provence, agreed that the Genoan could build city walls and two large towers, which still stand: one tower is at the end of the Grand Môle and the other is at the entrance to the Ponche.