In the FHL film #1696544 "British Family Antiquity" by William Playfair, 1811, vol. 9 - "The Baronetage of Ireland" page 372 it states :
"Ninian Adair, of Kinhilt, Esquire, who married Elizabeth, daughter of his Excellency James Hamilton, Viceroy of Albany,* by whom he had issue, William Adair, of Kinhilt, Esquire, who married Marabella, daughter of the Right Honourable Robert Lindsay, Earl of Crawford, and by her had issue two sons; first, Sir Robert Adair; and second, Archibild."
The bottom footnote read:
" * Thus expressed in the family pedigree."
Would you have seen the family pedigree of James Hamilton, Viceroy of Albany, showing his dau. Elizabeth Hamilton's marriage to Ninian Adair ?
Perhaps he had placed it in his volume 3 of the same series - "The peerage of Scotland" on film FHL 1696544 Item 3. Or he may have placed it in volume 8 of the same series - "The baronetage of Scotland".