About Duncan Green Campbell
As I expect you are aware, the section about Ireland is mixed up (as in Margaret Pilcher's book) and several efforts at research there have so far failed to clarify the facts, while the rest may be fine.
The 18th century family genealogy found recently shows:
Duncan = (not Mary McCoy but) Mary Ramsay of the Dalhouse family (Scotland) their son: John Campbell had a son: John Campbell = Mary McCoy? had a son: John Campbell = Grizzle Hay (Grizzle was Scots for Grace) had two sons: (1)Patrick Campbell (living in 1752) = Elizabeth Taylor and (2)David Campbell = Mary Hamilton Patrick & Elizabeth had a son: Charles Campbell = Margaret Buchanan Their son was Gen. William Campbell of King's Mountain
David Campbell, (2 above) and Mary Hamilton (whose father's mother was dau. of John C. & Mary) had a son Arthur Campbell = his cousin Margaret, sis. of Gen. Wm C. had a son William Campbell.
I hope this helps.
Diarmid (Campbell, Argyll, Scotland) http://archiver.rootsweb.ancestry.com/th/read/CAMPBELL/2005-06/1118738516
The above document is an original, 18th century affidavit of family relationships that is inconsistent with the data found in many published genealogical works that follow. In this early document, Mary Ramsay is named as the wife of Duncan Campbell (married 1672), and Mary McCoy is confirmed as the wife of John Campbell (married 1672). John Campbell=Mary McCoy are the parents of our ancestor, Robert Campbell. If the testimony in this circa 1795 "Ancestry" is true, Duncan Campbell (married Mary Ramsay, 1612) would be the grandfather of John Campbell (married Mary McCoy, 1672), and there is an intervening generation - - John Campbell - - during the sixty years that transpired between the two marriages. Other variations in the descendancy also come to light.
Dr. Ruby G. Campbell, stated in a letter, dated May 7, 1993:
I was very much intrigued by the Virginia document... The lines which state that John Campbell was the son of Duncan Campbell of Inverary and mary Ramsay of Dalhousie could be of great significance to that of the Duncan and Mary line.... For a long time it has been felt that there is a missing generation in this line of Campbells and that possibly there were two Duncan Campbells who each married a Mary McCoy. An unsubstantiated note in our records suggests that the second Duncan and Mary could be a Mary Ramsay instead of a Mary McCoy. Your document is the first item that I have heard of to list such a name.... We may have a good lead here.
Dr. Ruby G. Campbell wrote, November 23, 1993:
We intend to do further investigation on this line in Ireland to see if we can learn more about Mary McCoy/Ramsay who married Duncan Campbell. A Mrs. Linda Hart, a descendant of this line, is to chair a joint research project with other descendants helping to share the expense. We are excited about this and hope that your document represents the breakthrough that we needed. I will continue to keep you informed of any new developments.
Linda Hart's research may corroborate the "Ancestry," thereby disproving three of the last five generations that are presented in the established chart of CCS(NA) which follows, in which the presumed errors of the CCS(NA) chart are corrected in bold type. [Sent to and copied by me, Danny A. McBee].
According to THE CAMPBELL CLAN in VIRGINIA, p. 137, states: Duncan Campbell of Inverary, Argyleshire, Scotland, married Mary McCoy [Ramsay], in 1612 and the same year immigrated to Ulster County, Ireland, and died there, leaving descendants, who about 1726 immigrated to Pennsylvania, and in 1738 they removed to Augusta County, Virginia. [Danny A. McBee, January 11, 1998].
He was married to Mary Ramsey about 1612.