Depending on where you look, it's Scottish, Scottish/Gaelic, Welsh, or something called Brythonic... or maybe it's Cumbric instead.   Well, whatever.

It's a place-name, coming from a town (Renfrew) and the surrounding area (Renfrewshire) in Scotland.

Generally, it seems to be accepted as meaning "point of the current", possibly referring to it being located at the point that the rivers Gryfe, and Clyde meet.

(A bit of trivia: Renfrew is a Royal Burgh, and the current Baron Renfrew is England's Prince Charles.)

The purpose of this site is to share the genealogical information that I've ended up with.   You're welcome to contribute, provide corrections, and even distribute this information as you like- as long as it's distributed freely.