Hello Jen......
I found the information, re the oversea birth on
www.findmypast.comThis site has all British Census 1841-1911, and all birth, marriage and deaths, including those overseas........
I have just found this birth, and I am quite excited......
Ellenor HALL, Mauritius. 1823 . volume 131
My eyes are not too good , these days, and it is quite blurred, so the date could be 1822. Perhaps some one will do a double check ? It is in The Army Chaplains indices. There also appears to have been a John Hall 1833, and a Maria Hall 1834.
I don't think Ellen / Ellenor was married to Mr Powtney. He was still alive, and living in Gloucester, in 1851, and stated that he was a widower.
You can apply online for the certificate, if you think it is looking good
www.gro.gov.ukI did also look for the deaths of George and Alice Hall. These did not take place in Mauritius.
I will hqve another look though.
Kind regards
JeannieR