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;
Mac Aodhagáin Flann Mac Aodhagáin up to the year 1643. The surname has been Anglicised in a variety of ways, including as Mac Egan, Egan, Eagan, Keegan, or Keigan, McKiegan, and McKagan. Muirchertach Mac Aodhagáin Muirchertach Mac Aodhagáin Muirchertach Mac Aodhagáin Muirchertach Mac Aodhagáin Muirchertach Mac Aodhagáin Muirchertach Mac Aodhagáin Muirchertach Mac Aodhagáin Mac Aodhagáin Mac Aodhagáin (English: Egan or Keegan), is an Irish Gaelic clan of Brehons who were hereditary lawyers - firstly to the Ó Conchobhair Kings of Connacht, and later to the Burkes of Clanricarde. The earliest surviving Irish law manuscript, "In Senchas Már", was written prior to 1350