Hi Melissa,
John Corkill bapt 8 Oct.1820 Maughold married [1] Mary Ann BREW 1819-1867, and [2] Christian Jane COWLE in 1868. He died 1894.
If you post the place of birth and his ages in censuses of your John Corkill I can check Maughold records for you (and also those for Margaret Kermode with age and place of birth in censuses).
Sue