Thanks very much for that info - it's a great help to me. I've just had a look at the igi and find that there appears to be 2 marriages of John Caine and Alice Cannell. One is in Kirk Michael 20.02.1742 and the other was Ballaugh 11.06.1768. I'm guessing that Isabel's parents were the couple married in Ballaugh. But I wonder if the Will you have for John was the earlier marriage as the eldest son appears to be William but Alice's eldest seems to be John. I'm not sure now if I am confusing myself or not!! I did wonder if the son John married someone with the same name as his mother but I don't think the dates work out for that. Am I thinking on the right lines?? Any suggestions would be appreciated.