Thank you everyone for your time and effort , I had no idea my post would attract such attention , I'm a little overwhelmed. I will try to address all replies in the following :
I have no b/cert for RH snr as I have not enough evidence to apply
I have no b/c for RH jnr although I know all the relevant information but cannot pinpoint it on records , have tried 2x
both were miners as were most of the males in my family , no professionals at all
have transcript only of marriage RH snr to Gladys Jenkins 1917 , Pontypridd
Re my comment re death cert for RH jnr : don't know what happened with my typing there Jamjar , but I think I have posted info that his mother's name is stated as Margaret Williams and I don't know if our family provided information would have been reliable , my g marriagerandparents never spoke about their family back in Wales. There are several possibilities for a Margaret Williams as wife and with so many Williams's around that would be quite possible .
I do have relevant documentation for RH jnr and Mary Thomas from the time of their marriage in 1919 Pontypridd , military record , addresses etc in Australia , I knew these people very well .
Our Gladys is Gladys A Jenkins 1896 , Pontypridd
jonw65 :: I also think the place to start , is the marriage of RH jnr and Mary , and your information is correct , but the certificate doesn't give me any info that I can use that I didn't already know . Gladys Williams was a witness to the marriage by the way .
I will add another post