I've just been looking at some of our old indents. One, from 1638 shows 'Esker-rygos'. (Esgairygors). Another from 1769 shows 'Strygosfawr', otherwise known as 'Strygos' and finally, Meyric from 1810, writing about Thomas Richards of Scrygog. Another point is that Esgair-y-gors means, 'Marsh ridge' whereas none of the other names mean anything in Welsh.
I can't find George Richards, (1815-1854), the son of the Rev. Edward in the 1851 census, He is with his mother for the will in 1847 but dies, (suicide), in Tregaron in 1854.
regards, Peter.