Hello Margaret,

I think Catherine was married to Thomas Hunt, as it says here,

Name: John James Hunt.
Baptism Date: 20 May 1838.
Baptism Place: Braddan, Isle of Man.
Residence: Douglas.
Father: Thomas Hunt.
Biography: Parents: Thomas Hunt (engineer) & Cath Hunt (neé Corlett)

Have a look at the Manx Museum and get a copy of this Baptism.

also look for a Baptism for Catherine Corlett the daughter of Margaret and William c1811.

Averil