In the Burke's Adair of "Loughanmore" co, Antrim, I believe there was an entry for a marriage of an Adair (of the Thomas Benjamin Adair lineage) to a dau. of Waterhouse Crymble.
There was a passenger 4th Aug 1782 on an East India Company (Compnay of English merchants) ship that went aground, his name was listed as Capt. Adair Walterhouse, but this possibly may have been Waterhouse. There was also an Isaac Blair listed as being of the Madras Army who was servant to Captain Adair.