I have Alexander and Robert as twins both born 10/12 1855.
You say you entered John in error for James John was c10/6/1860, James was c12/1/1840.

On Philip an Isabella KERMEEN
There should also be a Daug MARY c9/4/1820.
The Mary Corkill Bapt Maughold would seem to be the most likely one to marry Philip.

The Philip Quayle I quoted was me clutching at straws and hoping for it to be the right one.

where I got it was off Family Search putting a date nearest to what i thought and it came up with IGI Individual Record for a PHILIP QUAYLE, CHRISTENING 03 aPR 1768 lezayre, Isle of Man.

Parents: Father Philip Quayle

Mother Christian Knickle

was it the right track or not?
Do!s this answer your query.