There is a possible marriage freebmd in June Q 1920 for David Pugh to a ? Brown correct area, but spouse first name not listed.
Jun 1920
Pugh David Brown Merthyr T. 11a 1950
Looking at the original entry on FreeBMD I think vol might be 1958 not 1950
so spouse might be Elsie as there’s a male name missing
Jun 1920
Brown Elsie M Pugh Merthyr T. 11a 1958
Griffiths William Richards Merthyr T. 11a 1958
Richards Sarah J Griffiths Merthyr T. 11a 1958
Edit to add
There is a David & Elsie May Pugh on 1921 census with a possible daughter P Pugh
Birth reg. Merthyr Tydfil Jun 1921 mmn Brown)
Added David born 1895 Merthyr Vale Elsie born 1898 Canton, Glamorganshire