Re: Just beginning my Trewin quest!
I might be able to help....as I have a large data base of Trewin info. My ancestors were the Kilkhampton Trewin crowd, who came to the Victorian goldfields in the 1840's..
Probably the best start would be to purchase the birth certificate of your grandfather...then I might be able to sort out where he is on the Trewin tree.
If you want to contact me, please do so to email: