Mcgill Family History
Mcgill Surname Meaning
Scottish and Irish: Anglicized form of Gaelic Mac an Ghoill ‘son of the stranger (or lowlander)’ (see Gall).
Irish and Scottish: Anglicized form of Gaelic Mac (an) G(h)iolla (Irish) or Mac (an) G(h)ille (Scottish) ‘son of the lad’ (i.e. ‘servant’).
Alternatively, it can be a short form of a personal name formed by attaching this element to the name of a saint in the sense ‘devotee’.
Source: Dictionary of American Family Names 2nd edition, 2022