See Norman Leece's article on the family in the IOMFHS Journal Vol XXV No 1 Feb last year, p. 26
He has the family back to 1. Thomas McLeece b. c 1655
2nd generation John McLeece m Jane Kermott
3rd Thomas McLeece m Isabell Bell alias Quayle
4th Thomas McLeece or Leece m Elizabeth Clark of Ronague

As regards Isabel Quayle I have hopes one day to trace all the Patrick Quayles back to the Ballamoar family, as there was one generation there in the 17th century with many sons. As you will know Ballamoar was an offshoot of Ballaquayle, Onchan.

Isabel was the daughter of Henry Quayle and Isabel Christian - persisting Christian name? Her first husband was Thomas Bell.