Lisa
Don't know if you are aware that for some time Mary Ann lived with her second husband, John Jenkins (20 years younger than her), next to her daughter Rebecca in Factory Road, Bargoed. The house is still in the family, my cousin lives there.
Another cousin of mine remembers one of the grandchildren, Julia.
I don't know who the grandchildren came from because I have not traced that line as yet, but it should be fairly easy to do, with some certificates that is.
Ray