Hi MatterdaleMan, thanks for the links, I have already joined your site (JimboGilly) enquiring after William, and am hoping Greame will respond, he may have some clues there.
I think the couple are the Williiam and Mary, so that means William, being born just 13 years after Thomas's son Isaac, and born at Red Syke must be the son of Thomas' younger? brother. Does that make sense?
I now do not think George was the son of William of Red Syke as he was born 1741, and William married 1747 and is described as a single man, although does that actually mean bachelor, could William have been married before?
after all he was 43 years old. Regards, Jim.