Mac Giolla Dubhthaigh
Mac GIOLLA DUBHTHAIGH—IV—MacGilldowie, MacIldowie; 'son of Giolla Dubhthaigh' (servant of Dubhtach, the name of two Irish saints); an Ulster surname. I can find no early instance.
Alphabetical Index to Irish Surnames
Mac GIOLLA DUBHTHAIGH—IV—MacGilldowie, MacIldowie; 'son of Giolla Dubhthaigh' (servant of Dubhtach, the name of two Irish saints); an Ulster surname. I can find no early instance.
Alphabetical Index to Irish Surnames