|Author||Rev Patrick Woulfe|
|Source||Irish Names and Surnames|
Mag UIDHIR—IV—Maguier, M'Guier, M'Gwire, M'Guiver, Maguire, MacGuire, MacGiver; 'son of Odhar' (pale, dun-coloured); the name of a great Fermanagh family, formerly one of the most powerful in Ulster. The name is first mentioned in the Annals at the year 956. Towards the end of the 13th century, the Maguires became chiefs of Fermanagh, a position which they held down to the reign of James I, when their country was included in the confiscation of Ulster. The family produced many valiant chiefs and learned ecclesiastics. The name is sometimes pronounced dialectically Mac Guibhir.
Alphabetical Index to Irish Surnames