Hi Scully,
After editing/correcting my summary (reply #18 ), I've come to the conclusion that Thomas is a red herring - just simple errors on the 1867 marriage entry, and the 1870 birth entry.
So, concentrating on looking for a
Robert FITZSIMMONS of the right age, I've come up with the following which is surely "your" Robert! Sorry about the location!
1871 CensusKilmarnock Prison, Ayrshire
Robert FITZIMMONS
Prisoner
Age: 26 (i.e. born ca 1845)
Birthplace: Ayr, Ayrshire
Occupation: Engine Keeper
This would explain why wife Mary, and children Annie and Thomas, were with Mary's parents in 1871.
And perhaps again (or still? - was he allowed out for a time when Mary died?) in prison in 1881 - but now in England.
1881 CensusRG11/897/77/40
HM Convict Prison, Chatham, Kent
Robert FITZSIMMONS
Prisoner
Age: 36 (i.e. born ca 1845)
Marital Status: Married
Birthplace: Scotland
Occupation: Convict
'Married' is interesting (though, if he was 'still' in prison, that might have come from his original records).
JAP
PS: I couldn't find mention of Robert in the online NAS. Perhaps there might be something in their card index.
Here is a RootsChat thread discussing possible sources for records of HM Prison, Chatham, Kent:
http://www.rootschat.com/forum/index.php/topic,61753.0.htmlPPS: (later edit) Gadget, I think your Glasgow 1871 idea was a very good one and I was about to follow it up - until I found the above! And that Kent chap has been niggling at me for a while ...