Hi jimnic
According to this older post by a descendant on another forum:
https://www.british-genealogy.com/archive/index.php/t-61641.htmlJames Warren, aged 22, all 5', 4¼", red hair & whiskers, dimpled chin of him, convict on the 'Mary' 1830 was:
Born abt 1808 in Mitcham, Surrey
He a Print Engraver.
His crimes were stealing geese, money and other things.
He served six months in Brixton
He was convicted 29 Oct 1829 at Surrey for stealing geese
He Married Mary Ann Carr in Tasmania on the 26 January 1835.
http://search.archives.tas.gov.au/ImageViewer/image_viewer.htm?CON31-1-46,247,10,S,41http://search.archives.tas.gov.au/ImageViewer/image_viewer.htm?CON18-1-15,296,118,S,80Edit: Add - your older topic 2011 on Rootschat. So you have all the above.http://www.rootschat.com/forum/index.php?topic=655046.0When you say you are seeking descendants of him, you are posting now in the England Forum - so I'm assuming you want to find out who his parents and siblings might be and
their descendants - as opposed to his direct descendants from his own children?
What searches & enquiries have you already made in the Mitcham Carshalton area of Surrey and what were the outcomes?
Cheers
AMBLY