We do not currently know of any antonyms for Macfarlane.
The noun Macfarlane is defined as:
A cape-coat; a coat having a shoulder cape attached at the neck. In styles for women it may have two front slits near the waist through which a person's arms may be extended; for men it is a (generally) single-breasted overcoat with sleeves, the shoulder cape usually extending only to the elbows; similar to the Ulster and Inverness