Mcmonagle Family History
Mcmonagle Surname Meaning
Irish: Anglicized form of Gaelic Mac Maonghaile a patronymic from the personal name Maonghal composed of the elements maoin ‘wealth’ + gal ‘valor’.
In this form the consonant cluster -ngh- has been ‘delenited’.
Compare Manley 4 which is based on an earlier form of the genitive.
Source: Dictionary of American Family Names 2nd edition, 2022