Gilla Pátraic mac Donnchada (died 996) was king of Osraige and the progenitor from whom all Mac Giolla Phádraigs (Fitzpatricks) of Ossory took their hereditary surname. Gilla Pátraic succeeded his father Donnchad mac Cellaig in 976. Donnchad mac Cellaig was the son of Cellach mac Cerbaill, king of Osraige (died