re: William Macartney, executor of estate of Samuel Stanton who m. Martha Adair. Samuel Stanton was f-i-law of Jesse Adair.
There was an entry in the "Belfast Newsletter" :
51611 4 Dec. 1750 3 +Belfast gentlemen judges distribution premium pounds +Dublin society linen ragssold papermakers Dec. 1749 1750 7. =HILL,Arthur. =Dobbs,Arthur. =Dalway,Robert. =MACARTNEY,George/Sovereign. =WILSON,Hill collector. =Mussenden,Daniel. =Byrt,Arthur. =MACARTNEY,William. =ADAIR,James. =Stewart,John. =Saunders,Margetson. =Saurin,Rev. ....................... In the Register of Deeds - Index Project there may be another connection in Vol. 13, p.78, April 17 1714, Deed / Memorial No. 5109 FHL film 461307 where James Adair of Belfast was a witness. Others on the Memorial / Deed were : George McCartney Richard Dobbs Henry Dallway William Crafford / Crawford (1st Party) Andrew McMinn (2nd Party)
(There was a Richard Dobbs Speight / Spaight who was a Governor in America in 1778.)
McMinn may have had business dealings in America.
Also in Vol. 13, p.32, March 19 1712, Deed / Memorial No. 4756 (same film, FHL 461307) was Robert Adair who was a witness.