Иштван V
Mary of Hungary (c. 1257 – 25 March 1323), of the Árpád dynasty, was Queen consort of the Kingdom of Naples. She was a daughter of Stephen V of Hungary and his wife Elizabeth the Cuman. Mary served as Regent in Provence in 1290–1294 and in Naples in 1295–96, 1296–98, and 1302, during the absences of her consort.