McClure (surname) hard and vigorous a “clur.” This expression is still commonly used in Ireland. McClure (surname) McClure is a surname with several origins. One origin of the name is from the Scottish Gaelic "MacGilleUidhir", and Irish "Mac Giolla Uidhir", which probably mean "son of the pale one” or “son of the cold one.” Another origin of the name is from the Scottish Gaelic "MacGilleDheòradha", and the Irish "Mac Giolla Dheóradha", which mean "son of the servant of the pilgrim". In the Scottish clan system, McClures are a sept of Clan MacLeod of Dunvegan. Famously, an Irish king with the surname McClure
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