I have a William Kewin from Lezayre IOM married a Catherine Cain, with a son b 28.5.1799 called John. John married on 9.12.1820 to Margaret Kermode. John and Margaret had at least 9 children, one of whom. Jane emigrated to Australia and married Charles Painter of Liverpool. Their daughter Sarah Ann when a teenager migrated to New Zealand.

Interested to hear if you think they could be the same family