re: James McKittrick Adair's letter to Grace Anna Burton Newenham, 31 May, 1793 (online, in the papers of George Washington), wrote that he was going to America to claim estates of his wife's family in Virginia and Maryland.
"I propose in a few days, to set sail for North America with a view to render effectual some claim of Mrs. Adair's (my wifes) family, on an estate in Virginia and Maryland, by virtue of a mortgage - I cannot more effectually interest your Ladyship in my (services), then by assuring you, that I go to plead the cause of the Widow and the Orphans - that I go to snatch, if possible, their all, from the unfeeling grip of those who have, for years, been in fraudulent of for....... possession of it. Tho they are relations, yet going a Stranger, unprotected and unpatronized, into a Country where long resistence and intensive connections have, of course given them considerable influence, I should find the accomplishment of ........etc", going on & on. ........................... The date seems to indicate that the above James McKittrick Adair may have been father of James Barter Makittrick Adair, noted below.The elder James McKittrick Adair may have married Ann Adair, dau of Robert Adair of Maryport, Wigtownshire, Scotland ?Was the John Adair who d. in America (Virginia & Maryland ?) prior c.1793 a son of Robert Adair of Maryport, Wigtownshire, Scotland ?
There was a James Adair who had land noted in Maryland Archives c.1709.
From "The history and antiquities of North Allerton in the County of York" (England). b. 17 Nov 1790 Anne Makittric, daughter of James Barter Makittrick Adair, M.D. and Charlotte Hamilton his wife, daughter of the late John Hamilton of Kype and Browncastle in the County of Lanark, N.B. esq." ...................................... I.G.I. James McAdair chr. 25 June 1795, Edinburgh, Midlothian, Scotland, son of James McAdair (McKittrick Adair ?) and Charlotte Hamilton.
Charles Murdock (Murdoch ?) Adair, chr. 30 June 1795 Edinburgh, Midlothian, Scotland.