Hi Ronnie: I don't seem to have a connection with Islay. My Katharine McArthur was baptized on January 1, 1749 in Kilmartin, Argyll. Father shown as Duncan and mother Katharine McFarlane. They were married March 17, 1748 in Kilmartin. She had siblings Isabel born Oct.12, 1751 and Malcom born April 20, 1753 all in Kilmartin.
Catharine (with a "C") married Hugh McIntyre on March 12, 1775 in Kilmartin. Hugh was born September 19, 1749 in Kilmartin. He had a sister Elizabeth born Aug.2, 1747 . Hugh's parents were John McIntyre and Ann Campbell. IGI have a Family Group Record which shows John McIntyre's birth about 1721 and Ann Campbell's born about 1725 both of Rashelly, Kilmartin, Argyll. This is where I hit my brick wall.
Can't find anything further on them except for two trees on Ancestry which showed Ann Campbell's father as Colin Campbell which then went on to link her up with the Dukes of Argyll. Quite sure this was rubbish but would have made a very impressive tree for me as it went right back to Cleopatra 1st, Queen of Syria who was born in 210 BC. Even passed King Arthur and Jesus Christ on the way!! Made very interesting reading but my tree ends with Ann Campbell of Kilmartin. I did try to make contact with the two tree owners to ask where they got Ann's parentage from but, of course, they didn't reply.