« Reply #5 on: Thursday 03 April 08 19:03 BST (UK) »
Your best bet would be the birth cert. Newport registration district would cover Risca.
I had a quick look for possible marriages and there was one in 1921 of Edmund Watkins to May Jenkins, but there are also other children registered before that with surname Watkins mmn Jenkins, but after your last post, I like this other one
Desmond G Watkins dec qtr 1926 Newport vol 11a pg 436 mmn Jenkins
Think I was helped by living near a Gurnos Road at one time

Cornwall: Allen, Bevan, Bosisto, Carnpezzack, Donithorn, Huddy, James, Retallack, Russell, Vincent, Yeoman
Cards: Thomas (Llanbadarn Fawr)
Glam: Bowler, Cram, Galloway, James, Thomas, Watkins
Lincs: Coupland, Cram
Mon: Cram, Gwyn, John, Philpot, Smart, Watkins
Pembs: Edwards (St. Dogmael's)
Yorks: Airey, Bowler, Elliott, Hare, Hewitt, Kellett, Kemp, Stephenson, Tebb