The Boyd family appears to be the key to the Adair,Macaulay and Acheson families in Ballymena.
Refer message 78 on the Macaulay forum.
Brian Boy MacAulay had a son Alexander MacAulay who m. Alice Stewart, dau of Archibald Stewart of Ballintoy.
Alexander and ALICE MacAulay had a son also named Alexander who married Mildred Reid/Read/Reade dau. of Rev. Adam Reid/Read/Reade.
Alexander and MILDRED MacAulay also had a son named Alexander who married Margaret Boyd, daughter of Hugh BOYD.
Alexander and MARGARET MacAulay also had a son named Alexander (1st child) who married Julia ACHESON daughter of Sir Archibald Acheson, later Viscount Gosford.
Alexander and MARGARET MacAulay's 2nd child was Miss. MacAulay who married Mr. ADAIR of Ballymena.
They also had a 4th child Hugh MacAulay b. April 6, 1746 on his mother's estate at Ballycastle, co. Antrim, Ireland, who took the name of HUGH BOYD to satisfy a condition of his grandfather's will.
Therefore the Mr. Boyd connected with the Adair family of Ballymena, and who may have been the landlord (as in the Belfast papers, etc.) may have been the brother-in-law of Sir Robert Adair of Ballymena.
Therefore the James/William Adair who was said to have been involved in the 1798 Emmett rebellion may have been a bro-in-law or cousin to Mr. Boyd.