Charles Martel of Anjou
Charles Martel of Anjou (1271–1295) was the eldest son of Charles II of Naples and Maria of Hungary. After his uncle Ladislaus IV was killed in 1290, Pope Nicholas IV backed him as titular King of Hungary against Andrew III.
He won recognition in Croatia but never ruled Hungary itself, and he was acquainted with Dante, who portrayed a meeting with his spirit in the Heaven of Venus in the Divine Comedy.
By his wife Clemence of Habsburg he left a son, Charles Robert, who later won the Hungarian crown as Charles I. He died of plague at Naples in 1295.