Hello Ainslie
I have bought a copy of the Llanaber MIS, as many of my ancestors are also buried there. I, too, walked through the churchyard, at the time, very overgrown, and I have found the Gwynedd FHS MIs invaluable. If you think any others would be buried there, it's well worth getting a copy of your own.
Agnes Mansel is buried in Section B, 0457, page 60 in the book, just below the road and to the right of the church as you look at the main door. The MI reads:
Here Lie The Mortal Remains of AGNES MANSEL, for 20 years the faithful and beloved wife of the Rev; SPENCER PERCEVAL MANSEL. She died at Borthwen in this parish, Nov; 30th, 1835, aged 48. "Whom the Lord loveth he chasteneth" (Chest)
I hope this helps with your quest and I have had so much help from others via RootChat over the years.
If you contact me directly, I can send one of my photos of Llanaber Churchyard, pointing in more or less the direction your ancestor would be buried. It appears to be too big to post on here.
