Joanna I of Naples
Early in 1382, James married Agnes, the widow of Cansignorio della Scala, lord of Verona. She was a daughter of Duke Charles of Durazzo and older sister of Margaret, the wife of Charles III of Naples. She was also (from her mother's side) a niece of Queen Joanna I of Naples. Her marriage to James was intended to solidify his alliance with Charles III. It was childless.