 In 1343, when Robert, King of Naples died and his young granddaughter Joanna I took the crown, John took the opportunity to expand his control in northern Italy.By 1344, he had conquered Alessandria, Asti, Tortona, Bra and Alba.On 22 April 1345, at the Battle of Gamenario, he defeated the Angevine vicar Reforza d'Angoult, who died in the battle.