Hi Maggsie, Many thanks for the reply.
Yes, that is the correct one. I believe I have all his Army papers - They specifically say that he requested to leave the reserve to join the Cape Infantry. My understanding is that the Cape Infantry records would not be part of the British Army Archive and if they exist would be held in South Africa.
I have also found on Findmypast, multiple articles from the Falkirk Herald & Linlithgow Journal detailing the voyage to the Cape and subsequent deployment of some of the the Cape Infantry. It seems the paper had a contributor (J Aitken) who was attached to the Infantry. In several articles he makes reference to his "Irish friend Hogan" (no first name ever used sadly). The initial reports are from aboard the SS Nubian. It seems likely that this individual would be my relative, especially as it also references Mrs Hogan, and Timothy had married in late 1881. I already have his parents names from his baptismal record (Cork City).
I believe that I have found most online records of his life up to 1882 and after 1891 (when his 3rd child was born in Dublin). If, as seems very likely, he went to The Cape, this would explain the 9 year gap in the records, so I'm seeking any records of his time there.
Thanks, Padraig