McCoy and Galloglass are both Anglicisations of terms from what language?
McCoy (surname) McCoy is a common surname of Scottish origin in the lands of Kintyre and then Irish (Gallowglass) origin. It is an Anglicisation of its Irish Gaelic form Mac Aodha, meaning "son of Aodh" (an old word for "Fire", a Celtic deity). It is particularly found in Ulster (Counties Antrim, Armagh and Monaghan) where many settled around the 13th century, having been Gallowglasses, and also in counties Limerick and Cork. Aoidh and Mac Aoigh were sometimes Anglicised as Hugh and McHugh.
Nealon Nealon is a surname of Irish origin. The name is an Anglicisation of the Gaelic "Ó Nialláin" meaning "descendant of "Niallán"". The personal name "Niallán" is from a diminutive of the personal name "Niall".