Mac Maongail
Mac MAONGAIL—IV—M'Mounell, M'Monnell, M'Monnyll, MacMonagle, MacMonegal, MacMonigal, MacMonigle, MacMunigal, Monagle; 'son of Maonghal' (wealth-valour); an old Donegal surname. For unaspirated g, compare with Mac Congail.
Alphabetical Index to Irish Surnames