I've managed to trace back the Cornish part of my family fairly confidently to Henry Moon, basketmaker, born in St Winnow somewhere around 1800. (He appears with his wife Grace on the 1841 census, HO 107/145/2 Dist 11, pg 4, as well as later ones.)
A number of online family trees have his father as another Henry Moon, born 1767 and his wife Ann Tambling. (1841 HO 107/153/20 Dist 2 pg 7) He's also a basketmaker, there's nothing to contradict it that I can see, but I can't find any records that actually confirm it. Is there anybody who knows Cornish records better than I do who can help definitely one way or the other? Thank you for any help you can give me.