Hi,
I'm not sure which of your posts to put this info on, but as this is the most recent here goes

Somewhere in your threads it says that he can't be seen in 1861 so I don't know if you have already seen these
British Army, Worldwide Index 1861
George BROMPTON
Service number: ---(89F)
Rank: Private
Unit or Regiment: Southern Recruiting Depot
Regiment stationed at: Cork
and
Geo: BROMPTON
Service number: 2448(89F)
Rank: Private
Unit or Regiment: Chatham Invalid Depot (Div 2)
Regiment stationed at: Chatham
So are these the same person or not? If not then the first one seems more likely to be 'your' George as he is in Cork where he is married in 1862.
Maybe George was ill and sent to Chatham in 1861 and enumerated twice, but if there are 2 George BROMPTON/BRUMPTONs in the 89F then how do you know which one is yours?
Regards'
Daisy