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".
Mac Amhalghaidh "Nic Amhalghaidh". This feminine surname is actually a contracted form of "iníon Mhic Amhalghaidh", which translates into English as "daughter of "Mac Amhalghaidh"". The form of the surname for married females is "Bean Mhic Amhalghaidh", which translates into English as "wife of "Mac Amhalghaidh""; this feminine surname can also be represented in the contracted form "Mhic Amhalghaidh". A cognate of the Irish "Mac Amhalghaidh" is the Scottish Gaelic "MacAmhalghaidh". The feminine form of this Scottish Gaelic surname is "NicAmhalghaidh". This feminine name is composed of the prefix "Nic-", which is an abbreviated form of the Scottish Gaelic "nighean mhic" or