Researching the Clan Mac Mahon of the Kingdom of Oriel. Includes the spelling variants of McMahon, Mahon, Mathews, McArdle and McPhillips. Features maps, illustrations, coat of arms and associated links.

Family history and general interests of Lee McMahon.

Bill McMahon's family database.

Robert Curtis McMahon family database as compiled by Patricia Winfree.

Researching the lineages of Cobourg, Ontario, CAN. Surnames include Arnold, Beatty, Bell, Brisco, Campbell, Damerall, Foley, Goody, Hannah, Hawley, Isaac, Latta, Lindle/Linnell, Matthews, McMahon, Phillips, Pitman, Pomeroy and Webber.

Descendants of Joseph McMahon as compiled by David Charles McMahon from Gambier, OH USA.

Documenting the lineages of McMahon and Willette.

Pedigree database as compiled by Kerry McMahon.

Researching the descendants of Mahon O'Brien of County Clare, a descendent of the Irish king Brian Boru; and the lineages of the Kingdom of Oriel, Ulster, the family of Conn and the rebel Colla da Crioch.

Descendants of Peter McMahon and wife, Elizabeth McKenna of Monaghan, IRL.