The McGann Name: Records, Origin and Blazon
Heraldry is personal. Arms recorded for a McGann family belonged to that family, and other bearers of the name may have no link to them.
Family name meaning
McGann began as an Irish family name. The usual explanation, from Elsdon Smith, is “the son of Annadh (a storm)”.
It is a patronymic: it named a person after a father or forebear. Related forms include McGan. In the 2010 US Census, 3,853 Americans gave McGann as their last name (rank 8,547).
Research your McGann family history with a full surname report and painted coat of arms.