Jane, I've emailed my cousin to see if she has a copy of James's marriage certificate. Now I'm going to try to find information on Isaac's will that would indicate James's whereabouts. Thanks for suggesting that at least one of those sources might give some answers.
My, it would be something if it turned out that I'm a distant cousin's of Jane Austen's. All this time while searching for "Austen" on the Internet, I'd been typing "-Jane" into the search slot, so that web sources containing her name wouldn't appear and distract me. Yes, it would be something, all right. I'd like that.
So, Isaac's shop was at the bottom of High Street. Yesterday at the Godalming website, I saw that a web cam was set up on High Street. Just for fun, I'm going to have a look. All this information is so exciting for me!
During an Internet search, I found Isaac Austen mentioned in this article, "Methodism in Normandy":
http://normandyhistorians.co.uk/aandp17.html(snip) "He [James Horne] later took over preaching at Pinks Hill with Isaac Austen of the Sevenoaks Circuit, who had come to Godalming to work with the local preacher Mr Golding."
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Isaac Austen is also featured (starting on Page 6) in an article called "The Church in the Wilderness," which too is about Wesleyan Methodist preacher James Horne:
http://normandyhistorians.co.uk/library/pw27.pdf In the above article, there is mention of a Wesleyan missionary program in South Africa. I wonder if the missionary program could be what led Isaac's family to emigrate there after his death.
Thank you so much for all your help!
Tril