Well heres a challenge!
I'm stuck. I have a copy of an entry on the 1911 census England and Wales for David Griffiths and his family. I have an Ancestry.Co.Uk subscription
David Griffiths a Collier b. Glamorganshire age 57. Wife Harriet age 45 (3) born Glamorgan Aberdare
Son Daniel T Griffiths age 15 a collier born Glam. Blaengarw
Dau. Emily12 b. Pontypridd
Elizabeth A. age 9 b. Ystradyfodwg
Mary age 9 also Ystradyfodwg who is our ancestor who married Henry East. I have that marriage cert.
The address in 1911 is 37 David Street, Blaengarw, Glamorgan. RG14/ piece 32543 Schedule No. 467
I can locate Daniel T. Griffiths on Findmypast b. in 1896 on the 1901 census in the search but I dont have a subscription to Findmypast. As a pensioner I cant pay to join more search engines. Try as I might I cant find the entry with Ancestry.Com. I suspect there is some kind of ****up with a transcription error.
I cant find the marriage for David and Harriot Griffiths either. I looked on Free BMD and minusing the 21 yrs they say they have been married I would have thought the Neath entry Griffiths Phillips would be correct but it isnt. Census entries show this couple in Resolven in 1901 and 1911 so they are not right.
As for the 1891 census because I dont have the marriage I cant do much with that either and they may not be there as a married couple. There are scores of David Griffiths.
Ystradyfodwg..is never used as an administrative district since when, people know this as the Rhondda Valleys ...The South Wales coalfield.
Always Happy to do look ups for others if someone can dig me out of this 'pit' !