With reference to the 1816 will of Margaret Kermode which Wayne summarized in his note above ...

This is the widow of Gilbert Kermode who has a 1812 Lonan will already transcribed.
Gilbert Kermode married 18 Aug 1767 to Margaret Kelly in Lonan (source Manx Notebook, Lonan Marriages 1718-1800).
Gilbert was baptized 13 Jan 1739/40 in Lezayre to William Kermode & Margaret Killey who married in Lonan 5 Dec 1738 (same marriage source. WK from Lezayre.)

I don't know how or if Gilbert connects to the other Lonan Kermodes.