Hi Pacaine
Where have you accessed Milbank Prison Records?
The HO24 reference is a National Archive Reference, re various prison records they hold, however it is not possible to search for individual prisoners on their site you have to visit Kew and go through the records.
When Abraham was sentenced in 1855 he was given 10 years
Penal Servitude, after the 1852 and 1857 acts, "Penal Servitude" replaced transportation. The following site explains:-
http://vcp.e2bn.org/justice/page11360-types-of-punishment-transportation-and-penal-servitude.htmlIf he had not died, he must have been a prisoner in 1861 Census.
Did you obtain the full details of the Newspaper article which suggest he was transferred to Millbank?
Just wondered if others were also transferred from Nottingham at the same time, is so it may be possible to find them in 1861 census.
Spendlove