Family name origins & meanings
- Irish : Anglicized form of Gaelic Ó Mongáin ‘descendant of Mongán’, originally a byname for someone with a luxuriant head of hair (from mong ‘hair’, ‘mane’), borne by families from Connacht, County Limerick, and Tyrone. It is also a Huguenot name, traced back to immigrants from Metz.
- Irish : see Manning.
- English (of Norman origin) : nickname for a glutton, from Old French manger ‘to eat’.
- English : occupational name from old Spanish mangón ‘small trader’.