Ohh, Yes, so there is... John & Martha Thomas. I would be very interested in the later family of Elizabeth Yapp's siblings, as my mother remembers visits from Shropshire relatives, who may well be Yapps rather than Pughs, as I think they had a connection to Lydbury, where Elizabeth's family were from. Although fairly distantly related by my Mum's youth, it seems they may have continued to keep in touch.
You have probably found the amazing site which lists the parish records and census returns for Lydbury.... being in the North West, I'd never have traced them so far back without the site... (I forget the address, but it's easily found via websearch).
Interestingly, Elizabeth & John Richard Pugh also had sons named Arthur (1870) & Walter (1877)...Perhaps named after their Yapp cousins. The other Pugh children were Henry John, Rose & Alfred
I look forward to hearing about your branch