Irish: Anglicized form of Gaelic Mac Maghnuis, patronymic
from a Gaelic form of the Scandinavian personal name Magnus. As
an Irish name this is found chiefly in Roscommon and Fermanagh and is
connected with the O’Connors or the Maguires; in Scotland it is
connected with the Colquhouns.
Dictionary of American Family Names, Oxford University Press, ISBN 0-19-508137-4
Start your FREE family tree. Who will you discover?
A family tree is the easiest way to start discovering your family history. To begin, just enter whatever you know and we'll use that to try and find more information for you.
Begin your family tree with your name:
The mcmanus name in History
A unique volume of fascinating facts, statistics and commentary following the mcmanus family name as far back in history as possible.
Member Connections
Anonymously contact one of the Ancestry members researching the mcmanus last name.