Gaffy I did reply to this (I think I did it correctly) but it does not appear so if I am repeating myself - sorry. Thanks for the census record. This census shows my g/father John together with his wife and children on a vist from South Africa. Louisa is listed with just her first name (aged 5). In the 1911 census of 99 Mount Street she is listed as a visitor from South Africa aged 15 with her full names of Louisa Jane MacGowan Fulton. She is living with John Charles MacGowan and his sister in law Louisa Jane MacGowan (the widow of Thomas William who died in 1902).
LJM Fulton was sent back to the MacGowan family at about the age of 12 which I find very puzzling. She was not the oldest of the daughters. She remained in Ireland, trained as a nurse, married R.B. Thomson (Bertie) and then returned to South Africa after he died.
I have tried today to find a connection between Louisa Jane MacGowan (nee Arnold) and the Fulton's but with no luck. I do know that Louisa was listed on IGI showing the birth of her child Alexander (7/4/1880) as Louisa MacGowan Arnold, but I think this was just an error, as her maiden name was Arnold.
The only other connection I have found is that John's sister Agnes Brown (1862-25/1/1893) had John C. Macgowan sign her will as a witness. As he was a Clerk of Petty Sessions perhaps this is why he was the witness?
Thanks for the interest you have shown in trying to solve my family tree problems