MacTavish

The surname MacTavish or McTavish is a Scottish surname, it is one Anglicised form of the Gaelic ''MacThàmhais'', i.e. ''son of Thomas.

Thus, MacTAVISH. G. Mac Tamhais. (G. = Gaelic Anglicized: MacTamhais (MacTavish) = Thom(p)son in English Provided by Wikipedia