Class and Crime in 19th Century UK

I've mentioned John Martin, the Young Irish leader of whom Marjorie is writing a bio. His diary of the trip to Van Diemen's Land (Tasmania) after his conviction by the Brits is interesting. What I find particularly fascinating is his treatment. As a gentleman, even though a felon, he and his fellow traveler seem to have lived in comfort and style, as well as could be expected on a 19th century sailing ship. Daily wine and brandy, a cabin which could hold five but only had the two, books.