Mac Suibhne Mac Suibhne The Gaelic surname Mac Suibhne is a patronymic form of "Suibhne" and means "son of "Suibhne"". The personal name "Suibhne" means "pleasant". Anglicised forms of "Mac Suibhne" include: "McSeveney", "McSeveny", "McSween", "McSweeney", "McSweeny", "McSwiney", "Sweaney", "Sween", "Sweeney", "Sweenie", "Sweeny", "Sweney", "Swiney", "Swinney", A lenited variant form of "Mac Suibhne" is "Mac Shuibhne". Anglicised forms of the latter Gaelic name include: (possibly) "Mawhinney", "McQueen", "McQueeney", "McQueenie", (possibly) "McWhinney", "Queen", "Queeney", "Wheen". One particular family that has borne the surname "Mac Suibhne" is Clann Suibhne. Members of this Scottish family settled in Ulster as gallowglass warriors in the Middle Ages.
Eolais mac Biobhsach manuscripts going back almost two hundred years. O'Donovan claimed the family name ( "descendent of Eolais") is still found anglicised as "Olus" or "Olis". two instances of the surname corrupted as "Oelase" and "Olase", are found in the Irish Fiants for Leinster. The surname must be very rare. Eolais mac Biobhsach Eolais "mac Biobhsach" (alias " "knowledge", anglicized "Wallis", "Olis" or "Olus" ) was a chieftain of 10th century Gaelic Ireland. He is noted as the first "full chieftain of Conmaicne Réin". His descendants, "the Muintir Eolais", expanded into the territory of present day south county Leitrim, and parts of