Deirdre
have you seen this on page 728 (not sure which Thomas it is) from 1903
https://www.thegazette.co.uk/Edinburgh/issue/11530/page/728/data.pdf
Hi Mar, yes about an hour ago! Got home from work, quick dinner, then on the computer

It was the one born in 1837 (my husband's ggg grandfather). We knew he was in Cilfynydd by 1911 (a widower lodging with his son's father in law

). This is great as it shows he was there in 1903, at the house where his son David Thomas Davies and his wife were living in 1901. Neither Thomas nor his wife Gwenllian are buried in Llanfrynach so I'm hoping Gwenllian's death will be in Pontypridd, and then find Thomas's too (there are a couple!).
By 1911 David and his wife had a large family (8 children) so I guess it was easier for Thomas to lodge elsewhere (though they then had 8 people in their house, inc 2 young children). But he's not with them by the 1915 electoral register which may narrow down his death.
The Thomas who was at the pub in 1851, 1861 and 1871 died in 1886 (he was a farmer of 101 acres at Trallong in 1881). His son William was at the pub in 1881 and probably still in 1891 (pub not listed in the census), before he died in 1893, aged 45. The 1837 Thomas was back in Llanfrynach (as a blacksmith) by 1891 and presumably took over after William's death until sometime soon after 1901.
Have looked at the links you sent last night, thanks. That listing of Thomas as landlord in 1820 is fascinating, though I'm no nearer finding out if he is Thomas b1837's father or grandfather. I'll have to see if Powys archives will look for the licence, though I guess that may not say anything about his age. I have to admit that I'm thinking it's his father - despite his age - though nothing concrete to prove it.
Fascinating hobby this family history, though it can take over a bit!
Thanks again for all your help, much appreciated. As you say, strange not to find any obits or more stories given the long family links with the area.
Deirdre