I have come into this link late but I have some extra information of which you may or may not be aware. I have the 2 March 1840 marriage certificate of James Gough and Sarah Curtis who were resident at Seagry, Chippenham district. James' father is recorded as Charles Gough and Sarah's father (who is listed as a widow) is Benjamin Stockholm. I believe the latter is an unusual surname.
I also have Job Curtis' birth certificate showing birth on 12 October 1839 to Sarah Curtis in Sutton Benger. Again Sarah lists her maiden name as Stockholm. The copying is poor but it looks like the person who registers the birth is Joanna Gough.
It would be interesting to find the death certificate of Sarah's first husband to see if there is the possibility that he could have been the father of Job. He could well be the father of Fredrick, listed as son of Sarah & James, along with Job, in the 1841 census.
By the way, my interest is in the Curtis line which goes through Job Curtis' son Henry Curtis and then onto his son Arthur Curtis in Bristol.