Hi Mary,I don't know if I can help or not as I've also been hitting a wall trying to track one of my ancestors but here's what I know.My ancestor, John Bruffey I of Tyrone, Ulster Province Ireland, married Eleanor/Elinor ("Nellie") McDonald of Scotland between 1781-1782,She was born about 1765.They married in Augusta County (now Pocahontas County West Virginia).
One of the problems is that the county was known by seven different names.Frederick County encompassed part or all of the area now in 7 or 8 Virginia and West Virginia counties.The following counties were all in the same area and their chronology follows:Augusta County until 1769; Botetourt County 1769-1777; Greenbriar County 1777-1791; Bath County 1791-1821; Pocahontas County 1821 to present.This alone makes it difficult to locate records.
Supposedly, Eleanor was orphaned and was brought to the US by and aunt and uncle at age 11.However, as yet, I've not been able to turn up anything about them nor Eleanor.She supposedly was from the Glasgow area but again, it's unconfirmed.If there is any connection between your McDonald and mine it would have to be through Eleanor's aunt and uncle. It would be the uncle in order to have the McDonald name and Martha would have to be one of their children.
I found a record of an Archibald McDonald who was marrying an Elizabeth Knowles.It was for a 'surety' posted December 31, 1795 in Augusta County.That would put him at the right age to be a child of Martha & Robert's.This was from the "Chronicles of the Scotch-Irish Settlement of Virginia; Vol. 2, pp. 310-319.
Have you tried looking up any/all children in the Pocahontas County records?They have some of them online.
I'm continuing my search and will let you know if I find anything more; please do the same.Regards, Bev