Dear JGDavies, Thanks for your response. I had forgotten about this request on the forum (from 2006) and I have found more information since then. The John Bryan you are referring to is the one baptised in Llanfyllin church on 15/11/1775. Later in life he became a Weslyan Methodist preacher and travelled the length and breadth of Wales preaching to the people in their own language - Welsh. I hadn't discovered those memorial descriptions, so I'll have a look - thankyou, although I have another reference to the preaching in Llanrhaeadr-ym-Mochnant in his diaries and in a book 'John Bryan a'i amserau'.
I made a little progress with the marriage of his parents and have found them marrying in Llanfyllin 28/12/1774. I am now trying to find their birth records and have had no joy. Again thank you for your response.