David - going back to your message No. 11.
I see that the Thomas Hand convicted July 1841, on prison hulk August 1841, deported for 7 years to VDL was a butcher, widower, three children. So details match. Maybe he never returned and therefore it is possible that when Thomas Graves (Hand) went to Australia in 1846 his father was still alive there!
What a fascinating history.
Selina