Meaning and Origin of: McAdoo

Family name origins & meanings

  • Northern Irish (Connacht) : Anglicized form of Gaelic Mac Conduibh ‘son of Cú Dhubh’, a personal name or byname meaning ‘black hound’, from ‘hound’ (genitive con) + dubh ‘black’. It is also Anglicized as Cunniff andMcNiff.