I am sorry that I was not more clear in my first post. I have spent 20 years researching these Griers. I have managed to sort out the fact that there were two Joseph Griers about the same age. One lived in Newtontully/Tullymore and married Prudence McClay, date and place unknown. These are my line. The other Joseph Grier lived in Drumman/Drummond and married Jane Monro in 1825. They lived across a tiny bridge from each other. They both attended church at one of the three Ramelton Presbyterian churches. It was quite the challenge to sort out their children but I did manage to do it. I have followed most of the children to their deaths in the USA athough more from Drumman stayed in Ireland. I can give you a list if it helps. Prudence was the youngest daughter of my line and the only one of their children to remain in Ireland. Both of these men had sons named Joseph, mine in 1835 and the other from Drumman named Joseph George. Just for more fun, there was another Joseph Grier who lived in Glen Lower, mostly associated with a Robert. I do not yet know how or if the two Josephs across the bridge were related.
My Joseph was born about 1784 per his 1869 death record. His wife Prudence McClay was born about 1794 per her death record. The Drumman Joseph Grier's father was likely William Grier per the Tithe Applotment records where William is crossed off in one and Joseph written under it. (Joseph and Jane also named their oldest son William.) I have found few of these books online and none like this for my Joseph. So I am looking for his parents. He seemed to rent quite a bit of land in Griffiths Valuation.
I found a Rebecca McClay Miller getting married for a second time in 1852 in Letterkenny to William Rae/Ray/Wray. She was born about 1802 and her father's name was Samuel McClay. I suspect that she may be a sister.
Joseph and Prudence named their oldest son John. There was John Grier in 1796 Flax Growers Record and may be the father? Another son was named Samuel, possibly for Samuel McClay? Samuel was present at his mother's death and then emigrated to LInn County, Iowa, USA. It is his death record that gave me the names of his parents, his birthdate, and the name of the county in which he and his children were born., Co Donegal. (Samuel married Rebecca Campbell and all but two of their children were born in Newtontully.)
My paternal grandmother was a Greer and her grandfather was the Joseph Grier born 1835. So sad to lose all this information in such a short time. Let me know if there is anything else that I can tell you.
You are amazingly helpful! Thanks again, Susan