Mac Maoláin Mac Maoláin Mac Maoláin Gaelic-Irish surname. Mac Maoláin was a surname borne by a number of unrelated families in Gaelic Ireland, anciently found in Breifne, Mide, Brega, Connacht and Ulster. Now anglicized MacMullan, MacMullen, MacMoylan, McMullen, McMullan, McMellon, and McMullin, this name finds its origins as the collateral form of the root forenames: Maelan (pronounced Moylan); Maolain (pronounced Mullan) and Meallain (pronounced Mellan). The Irish form Mac (pronounced Mec=son of) Maoláin evolved primarily in the provinces of Connacht, Leinster and also in Ulster, where the influx of Scot Irish McMillan who adopted the Irish form McMullen makes separation of the
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