MacMahan Coat of Arms and Surname Origin
MacMahan belongs to the McMahon family of names, which has Irish roots. MacMahan is listed among the recognised spellings of McMahon. At root, the name means “Son of Mathúin ("bear")”. Census takers and immigration officers often wrote what they heard.
The same family of names includes MacMahon and Mahon.
Heraldry is personal: arms associated with the McMahon surname were borne by specific families, and sharing the name does not mean sharing the blazon. Get the complete MacMahan report, with a museum-style coat of arms.