Bell (surname) of "Isobel". In some cases, the surname originates from a nickname, or descriptive name, derived from the Old French "bel" ("beautiful", "fair"). In other cases, the surname "Bell" represents an English form of the Gaelic surname "Mac Giolla Mhaoil" ("son of the servant of the devotee"). In some cases, the surname is derived from placenames in Norway (Bell) and Germany (Bell in Rhineland; and possibly Belle, in Westphalia). The surname Bell is also sometimes an Anglicized form of the German "Böhl" or "Böll". Early attested forms of the surname when of a patronymic origin include: Ailuuardus ""filius Belli"", in 1086;
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