Hi Julie,
It is a possibility that your Elizabeth Wade of Ramsey was the one buried with the residence Lezayre (recorded in the Maughold parish register) because Ramsey is a town which is mainly in the parish of Maughold, but partly in the parish of Lezayre. You would notice that some Ramsey censuses have Maughold and others have Lezayre.
Elizabeth Wade is turning out to be very tricky (no wonder we stopped looking for her a couple of years ago!) because of having two of them in the 1851 census of about the same age.
Sue