Gahan (surname) Irish language "Mac Gaoithín", meaning "son of "Gaoithín"", although the more common Anglicised form of this Gaelic name is "McGeehan" in Ulster. Gahan (surname) Gahan (and its variant Gahame) is a surname with several different origins. One origin of the surname is from a reduced form of "McGahan", which is in turn an Anglicised form of the Irish language "Mac Eacháin", meaning "son of "Eachán"". Another origin of the name, in Leinster, is from a reduced form of the Irish language "Ó Gaoithin", meaning "descendant of "Gaoithín"". The personal name "Gaoithín" is a diminutive of "gaoth", meaning "wise", or "wind".
McLoughlin McLoughlin McLoughlin is one of nearly two dozen Anglicisms for three Gaelic-Irish surnames: Mac/Nic Lochlainn (most commonly Anglicised "McLaughlin"), Ó/Ni Máoilsheáchlainn (usually "McLoughlin" or "M'Loughlin"), and Mac/Nic Lochnaigh (usually rendered Loughney but occasionally "McLoughlin" or "MacLoughlin"). "Mac" and "Ó" are masculine prefixes; "Ni/Nic" is feminine. Mac is rendered into English as "Mac", "Mc" and "M"'. Ó is rendered "O' ". The feminine prefix is rendered into English according to its masculine counterpart (e.g. Nic na Mhara > McNamara, Ni hEaghra > O'Hara). They are used with names that originated as patronymics. Occasionally, the prefix "Mael/Maol" is Anglicised "Mac/Mc". The surname