拉迪斯劳
His daughter Costanza (born 1377) married the future King Ladislaus of Naples in Gaeta in 1389. At the death of king Frederick III, Manfredi became one of four viceroys, ruling the kingdom for Maria, Queen of Sicily. Maria was kidnapped by the Aragonese and forced to marry Martin I the Younger. Manfredi fought against Aragonese power.