The William, that I am looking for, may have come from Scotland. He probably made what he had on the Clyde, then bought the farm in Antrim, I believe at Killade (Killaed). He was protestant, his wife Mary Jane Dane was RC. I believe that Mary probably came from Newtown, in Ards.
As such, William may not have been of an established Finlay family in NI. There is no tradition in the family of relatives at his generation.
I am more likely to find something of the Dane family, or of their son Alexander Finlay, born about 1847 I got a letter some years back:
Letter23 8 84 Dear SirIn reply to the letter you sent inquiring about W.J.Finlay, the only possible connection to this man might have been an Alexander Finlay. He lived near Benburb. There are a few people living in the Benburb area yet, who knew that man. If you’d send a copy of W.J Finlay’s photograph to me, I’ll show it to some of these people, and see if they recognize him. Oh, by the way, he came from abroad to the Benburb area around 1900, and at that time he was in his mid-fifties. Yours faithfully,William Finlay (no relation)
There were a surprising number of Finlays in NI it seems.