Averil,

Maughold parish register has:
Elizabeth dau of Thomas Corkill & Ellinor Kermod 22 Oct 1769. Private baptism.
No other info.

Ellen dau of John Kermode & Elizabeth bapt. 19 Sep 1742.
No other info.

No other Ellin /Ellinor Kermode possibles bapt in Maughold that I found.

Eldest child appears to be Jane dau of John Kermode & Elizabeth bapt. 1 Oct 1738.

John Kermode & Elizabeth Kissage married Maughold 4 Feb 1737/38.

John son of John Kermod bapt.15 Jan 1707/08.
John son of Richard Kermod bapt.7 Sep 1690.

Thomas Corkil & Elinor Kermod married Maughold 4 Feb 1769.
No other info.

You wrote:
Thos Corkill 29 Dec 1737 Maughold son of
Peti ( Peter ? ) Corkill & Margt. Christian
This has been put in and says, Burial, 1755
age would be 32 at time of marriage.

Parish register has:
Thomas son of Peter Corkill & Margaret bapt.29 Dec 1737. [No surname for mother.]
No burial found 1755.
Tho infant Son of Peter CORKIL was buried Maughold May 14 1757. [Note - infant.]
There are some Maughold Peter Corkill wills indexed on Brian's site.

Peter CORKILL Senr buried Maughold Apr 30 1741.
Peter CORKIL buried Maughold Jan 22 1767.
Peter CORKILL buried Maughold Nov 6 1778.
Peter CORKILL buried Maughold Apr 17 1787.

You wrote:
Thomas Corkill 27 May 1752 Maughold son of
John Corkill & Joney Gill
age would be 17 at time of marriage ?

There should have been a note in the par reg if he married underage, especially if he were only 17 - I think this bapt is unlikely to be the Thomas who married Elinor Kermode.

Which leaves you with two possibilities for Thomas?

- Wills for possible parents and siblings still the best source, but I have checked most of the Ballagorry/Ball-na-gorry ones [descendants of William & Esther].

Just checked, and there were also;
Thomas son of Edward Corkill & Ann bapt.5 Jul 1736.
Thomas son of Daniel Corkill & Elizabeth bapt 27 Dec 1733.

Sue