Joe,
These are the wills I referred to in my last message, of Jane Skillicorn's parents:
John Skillicorn buried Lonan 13 Jan 1781/82 married Margaret KELLY buried Lonan 6 June 1789.
His will: http://www3.telus.net/lawson/twill/1782_004.html
Her will: http://www3.telus.net/lawson/twill/1789_003.html

Jon Corkill's decree:
http://www3.telus.net/lawson/twill/1798_001.html
Jane's decree: http://www3.telus.net/lawson/twill/1823_000.html

I have Jane Skillicorn and Jon Corkill's son William as buried in Maughold at aged 77, "of B'Gorrey", on 16 July 1855, which identified him as John and Jane's son who had been bapt in the Parish Church on 9 Aug 1779. Private baptism.

William Corkill & Catharine Kelly married in Maughold on 10 May 1800, and these children were bapt in Maughold:
CORKILL Jane daur of William Corkill & Catharine Kelly bapt Parish Church 14 Sep 1800
CORKILL Catharine William Corkill/ Catharine Kelly Parish Church 19 Sep 1802
CORKILL Mary Ann William Corkill/ Catharine Kelly Parish Church 27 Jan 1805
CORKILL William William Corkill/ Catharine Kelly Parish Church 28 Jun 1807
CORKILL Robert William Corkill/ Catharine Kelly Parish Church 12 Nov 1811
CORKHILL John William Corkhill/ Catharine Kelly Parish Church 1 Jan 1815
CORKILL Matthew William Corkill/ Cath Kelly Parish Church 14 Jun 1818

Are these the same children as you have?

I'd be interested to know what happened to William's descendants, if you don't mind posting the later details? Did they go to Ramsey?

Sue