He changed his name to Ungaro when King Louis I of Hungary created him knight in December 1347 .
He was the son of Malatesta Guastafamiglia , lord of Pesaro and Rimini .
son changed son 's name to son when King Louis I of Hungary created him knight in December 1347 .
He was the son of Malatesta Guastafamiglia , lord of Pesaro and Rimini .