Jim Tweedie was a turner for Wm. Sinclair and Hugh MacPherson during the 1960's before going out on his own in the 1970's to form Inveran House. By all accounts he was as entertaining as he was talented.

Every now and then a Tweedie bagpipe will surface, sometimes in difficult condition. I have to confess that Tweedie didn't make the most handsome bagpipe I've seen, but the sound and behavior more than compensates. The first Tweedie bagpipe I played the bass failed to start. I tuned the tenors and thought "Hey, they're pretty nice." Then I popped on the bass and it just blew me away. It was magnificent. Without hesitation, Tweedie drones are among the best sounding drones I've ever played. 
Jim Tweedie