The leader of forces assembled by his uncle Rua, he killed the Visigothic king
According to one legend this historical figure received a signet ring from Honoria, the sister of Valentinian III, which he assumed was a marriage proposal.  The leader of forces assembled by his uncle Rua, he killed the Visigothic king Theodoric I at a 451 battle near the Marne river, though in the end his forces were defeated by Aetius.  Said to have been convinced by Pope Leo I not to sack Rome the following year, FTP, name this loser at Chalons, the legendary king of the Huns usually referred to as the "Scourge of God."
According to one legend this historical figure received a signet ring from Honoria, the sister of Valentinian III, which he assumed was a marriage proposal.  
Attila the Hun