Just read your email with interest. If it is Bont-y-Werglog (dd), (near Llangelynin Old Church) - you may be able to solve a mystery for me and my brother. We had a great aunt known as 'Catrin Ellen Bont' who lived there on her own for years. She did not marry or have children and my father believed he was her only living relative - but in her will, she left the farm to a neighbour. She was fiercely independent and accepted help from nobody. She had one cow which calved yearly. She sold the calf at the Cattle Market in Conwy and lived off the proceeds, until she sold the next one. In the very bad winter of 1963, a carter told my brother that he remembers taking over a wagonful of hay over to her from our farm. She was very tall, thin and dressed always in black. During the summers in the1950s/1960s, my brother said she used to walk over the mountains from Llechwedd to Dwygyfylchi, to visit my father.
If you think it's the same person, I would appreciate details of your g -g -grandfather's birth and death dates, so that we can work out how she was related to us as I am busy working on the family tree. I think it was probably on my paternal grandmother's side.