Re last posting of Isabella Adair m. 1829 Wm. McCune at Killinchy & Kilmud, co. Down, there may have been another error in the transcription as there was another marriage of an Adair at the same Presbyterian church -
James Adair m. 1817 Agnes McKeown. McCune and McKeown maybe the same family.
Also at married at the same church were -
Elizabeth Adair m. 1814 Wm. Lenikin. I query that this was Lenikin, it may have been Henikin or similar whose family were associated with Adair family.