1) Patronymic surname 
McWhirter and Macwhirter, MacWhirter (also spelled McWherter and Macwherter, MacWherter) are Anglicisations of the Scottish Gaelic Mac an Chruiteir, meaning `son of the harpist or fiddler`. The name is derived from the Gaelic cruitear, meaning `harpist`, `fiddler`. The Scottish name is generally found in Ayrshire. The surnames can be represe...