Meaning A boy's name of Gaelic origin, it means "Son of the Briton." Origin of Mac an Bhreatannai Gaelic , Irish +-100%Zoom level changed to 1 Popular Middle Names Pronunciation 🔊 Listen Mac an Bhreatannai Similar Names Mac a’bhaird Mac Ailean Mac Alasdair Mac Asgaill Mac Bheathain Mac Ghille Aindrei Mac Ghille Bhuidhe Mac Ghille Dhuibh Mac Ghille Laider Mac Ghille Mhichei Year by Year Popularity of Mac an Bhreatannai