Sally Ellis

Sally Ellis was the wife of Alan Ellis, who passed away before Alan was put into the nursing home. They never had children. (TV: Out of Time)

Torchwood website
The series 1 version of the Torchwood website contained an announcement for the wedding of Sally Newman and Alan Perkins. This would suggest that Alan's mother remarried following Ellis' disappearance. According to the announcement, their wedding took place on 12 April 1964 at St John's, 3pm, Butetown, Cardiff, South Glamorgan. A party afterwards was held at the Royal Swan Hotel, also in Butetown. The wedding list was at Ellis's, Cardiff.