I am desperately seeking info re my great-grandfather John Caldwell. He was born in Beith on November 1, 1823; married my great-grandmother Margaret Wilson Gibson at the Beith High Church on March 19, 1847. I believe they immigrated to Canada and settled in London Ontario abt 1873. Their children included my grandmother, Mary; twin sons John and Andrew; Alex; Gavin. I believe my great-grandfather was estranged from my great-grandmother sometime after that. He may have returned to Glasgow. His death most likely occurred in late 1893 or early 1894. Any help with this very profound mystery would be much appreciated.