I have a little information on Isabel 1716. She was one of at least 10 offspring of James CALLOW & Joney KNEALE (of Curragh Doo) & mentioned in his will 1733. At this stage I have no spouse assigned to Isabel.

Resided: "Curragh Doo" intack on the North side of Dreemskerry Hill in 1725
Triplets - Jane, Mary & John probably died in infancy as they are not noted in the will 1733
Archdeacon Wills 1733/4 #96, Maughold, of James Callow, died about 6 Dec 1733 is available on-line.

I have more information on this family if it proves to be the "right one". Sorting out the many William CALLOWs at this time is somewhat difficult. See my webpage at:
http://www.angelfire.com/rock/haven/maughold.html