Thanks hanes teulu
I have been to Llyn Brianne a couple of times, but before realising the family connection, and not appreciating what was flooded to create the reservoir.
Looking on Parishmouse Wales and the topographical description, it says the the population (1800 -1850) doesn't rise above 150.
My 2nd great grandmothers father had died in 1834, and his wife had remarried and moved down a bit to LLanwrtyd. So no chance of finding them in LLandewi Abergwesyn in 1841.
I need to do a bit more research though, and expand the tree to see if there is any family connection to the Jones family in Cribin in 1841.
So would make absolute sense that somewhere around Gribin farm and alongside the stream were houses/farm outbuildings that could have been occupied by farm labourers and their families.
Of interest, an older sibling to Leah (William baptsised 1805) gives address as Clynglas.
The last child born in 1832 (Margaret) also gives abode as Gribbin- rhydd. Father now listed as a farmer. Nearly 30 years of having children!
Thanks so much again, for helping me unpick this.
Think another trip up to the reservoir in called for