It may not be of any direct help but it connects two closely associated Kimarnock families, Bankhead (my ancestral line), and Boyd, to Coleraine. From my personal notes:-
The Registry of Deeds, Dublin, Book 19 p477 No 10608 has a lease dated 12/12/1716 between James Jackson of Dublin and James Bankhead of Coleraine, merchant. Jackson leases to Bankhead 1/6th of the freehold of Glenleary now in tenure of Mr John Boyd for 31 years @ £6-3-4.
You can view this doc for free online via Index to Register of Deeds Ireland Project website and Familysearch. A link at the bottom of the page for the former will take you to the film index files of the latter. There may be other relevant deeds but be advised it is a (very) painstaking job to find them. There is a Grantor index but none for Grantees. There is also a land index where you might find Glenleary deeds listed. You'll need to know which Barony Glenleary is in. I don't have any mention of your particular Boyds in my notes.
Good luck
Matt