Sue, I have found and eliminated some of the Thomas Corkill 's Ihave just read the film, and I have Peter Corkill Will that I will put on Brian's website when I get it typed up, mentions, eldest son, Samuel, & Peter, & William, & Mary, and Granddaughter, Margaret Corkill, and Wife, Margaret Corkill als Christian.

Here are the Thomas Corkill's eliminated,

Thomas Corkill 5 July 1736 Maughold
Son of Edward Corkill & Ann
Burial, Tho Corkill ( infant ) 18 July 1736

Thomas Corkill 29 Dec 1737 Maughold
Son of Peter Corkill & Margaret Christian
Burial, Tho Corkill ( infant ) 29 Mar 1738
There was another Baptism, Thomas Corkill son of Peter Corkill & Margt 14 July 1756 but He would be aged 13 at time of marriage.

So that leaves me with,

Thomas Corkill 27 Dec 1733 Maughold son of
Daniel Corkill & Elizabeth Corkill aged 33 at time of marriage.
and
Thomas Corkill 21 July 1745 Maughold son of
William Corkill & Easter/Esther Cannell aged
24 at time of marriage.

Are you related through, Thomas or John Corkill ?
Regards,
Averil