Mac Ospaic Mac Ospaic Mac Ospaic is masculine surname in the Irish language. The name translates into English as "son of "Ospac"". The surname originated as a patronym, however it no longer refers to the actual name of the bearer's father. There are specific forms of the surname that are borne by married and unmarried females. There is at least one Anglicised form of the surname. "Mac Ospaic" translates into English as "son of "Ospac"". The surname originated as a patronym, however it no longer refers to the actual name of the bearer's father. The name "Ospac" is a Gaelic derivative of
McCabe (surname) "MacNab", "McNab", which are from the Gaelic "Mac an Aba", "Mac an Abadh". Bearers of the surname are considered to have settled in Ireland from the Western Isles of Scotland sometime around 1350, employed as gallowglass (mercenary soldiers) to the O'Reillys and O'Rourkes which were the principal septs of Breffny. According to a pedigree written by Dubhaltach Mac Fhirbhisigh, the MacCabes descend from the MacLeods. In time the MacCabes became a recognised Irish sept, with the chieftain being called "Constable of the two Breffnys". According to MacLysaght in the mid 20th century, statistics then showed that the surname was more