Smith (surname) usage has passed into "Smitty" being used as a surname itself. Other languages with different words for the occupation of "smith" or "blacksmith" also produced surnames based on that root. Words derived from the Latin term for smith (literally "one who works with iron"), such as the Italian words "fabbro" and "ferraio", are the root of last names common in several parts of Europe. In Ireland and Scotland, the word for smith, "gobha", is found in the surname "MacGouren"/"MacGouran"/"MacGowan"/"McGowan". This surname is an Anglicised form of "Mac a' Ghobhainn" (Scottish Gaelic), "Mac Gabhann" (Irish), meaning "son of the smith". In
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