The will of John Clague mentions the names William Clague, Isabella Kennish and Thomas Mylrea. They are all included in the monumental inscriptions for Lonan , old church.- see Manx Notebook.
Their base was Ballakilley.
The Lonan burials show John to be 71 on death which puts him C 1760 at birth. William C1753 and Isabella C1763 all the children of William and Alice ( Craine ?).
Thomas Mylrea was the son of Elizabeth another daughter of William and Alice.
The only Mary I can find for 1785 was christened in Lezayre and this was the year after Alice died.
Where does your Mary come From?
Does this info. fit in with your research?

Len Faragher