Gilmore (surname) lad". Gilmore (surname) Gilmore and Gillmore are surnames with several origins and meanings. The name can be of Irish (from Ulster) and Scottish Highland origin, Anglicised from the Gaelic "Mac Gille Mhoire" (Scottish Gaelic), "Mac Giolla Mhuire" (Ulster Irish Gaelic). The name was a patronymic name meaning "servant of (the Virgin) Mary". Another origin of the surname Gilmore is Irish, with two separate meanings. In County Armagh, the name is an Anglicised form of "Mac Giolla Mhura" "servant of St. Mura" (of Fahan, County Donegal). In County Sligo, "Gilmore" is an Anglicisation of "Mac Giolla Mhir" meaning "son of the
Irish people used. While both "Mac" and "Ó'" prefixes are Gaelic in origin, "Mac" is more common in Scotland and in Ulster than in the rest of Ireland; furthermore, "Ó" is far less common in Scotland than it is in Ireland. The proper surname for a woman in Irish uses the feminine prefix nic (meaning daughter) in place of mac. Thus a boy may be called Mac Domhnaill whereas his sister would be called Nic Dhomhnaill or Ní Dhomhnaill – the insertion of 'h' follows the female prefix in the case of most consonants (bar H, L, N, R, & T). A