Hi Lucknow,
Thanks for your reply. The weird thing is that I've just returned from the UK spending many days at Kew researching the 84th & my ancestor

so I feel quite an expert

Off the top of my head as I'm not at my own computer, I found my 2xgreat grandfather in many of the muster & paylists so could track him without too much difficulty. He had originally joined the 67th Foot in Galway, Ireland in 1840. Their muster books gave a place of birth & age at enlistment, which was a great find! Along with a whole bunch of other men, my 2xgreat grandfather volunteered to join the 84th foot in April 1842.
I found from the campaign medal list that he had been with Sir Henry Havelock's force that 'relieved' Lucknow for the first time on September 25 1857. The Defence of Lucknow clasp aparently is quite a rare medal to find these days.
What a pity you didn't write this two weeks ago as I could have looked-up your relative as I was doing mine! Having said that, I can at least give you the TNA references for the 84th information. I can also send to you some digital images I took of a book from the NA library which details the movements of the 84th.
I had also been in touch with the Regimental Museum with no luck for anything of the dates I needed. I also phoned Rotherham Local Studies Centre to check if they had anything but they didn't so I think I have exhausted all possible existing documents for the 84th.
Trawling the regimental books for a few years after 1857 I did find reference to monies etc given to his widow in 1859 so I know she was still around.
I still can't get clarification as to whether wives & children travelled with the regiment during the mutiny. Do you have any knowledge of this?
Jane