Hi again - I have an update for you.
I've found an Episcopal Will for John Caine written in 1831 but seems to have been activated in 1837 [same date as wife Iabella's Will]. John leaves his goods etc to his son Thomas, Henry is forbidden from claiming againsgt the estate. But also Thomas is forbidden from claiming against his mother's estate when she dies. Henry is eventually paid out £30 by mutual agreement by brother Thomas. It is mentioned that Henry lives in Ballaugh and on the 1841 census that is where our Henry lives. Thomas [brother] lives at Orristal in Kirk Michael and this is the land etc that is mentioned in the Will.
I don't know if that helps you or not but it has certainly helped me - thanks for Isabella's Will - it definitely pointed me in the right direction.
Thanks again Viv