Hi Alwyn,
Many thanks once again for the research, it really is appreciated. I think you were correct all the time about Cefncoch. I think what I have done is read about Rhydyrhiw on the Genuki pages and literally thought that Rhydyrhiw was either a village or a town on the mouth of the River Dysynni, instead of a township being an area of land like a parish or borough. I will now try and research Cefncoch, as I believe it was once a tavern or coaching inn, so it might be possible my Gt Gt Grandmother might have been a maid or servant whilst living there, before moving to Clos Bach where she was living when she married my Gt Gt Grandfather a Hugh Angel and lived in the Tycroes farm.
Many many thanks once again,
Gwyn.