This has possibly already been posted, but here's some information found by Brian Lawson

Ther are no birth or civil marriage records for this period.
You have to rely on baptisms and marriages recorded in church registers.

The IGI at www.familysearch.org has
Thomas Corkill bp. 10 Oct 1813 of Thomas Corkill & Ellinor Callow
Thomas Corkill bp. 28 Jul 1839 of Thomas Corkill & Margaret Kelly

Thomas Corkill married Margaret Kelly 23 Nov 1834 at Maughold

1841, Maughold, district 2, page 12, part of Ballakilley
Thomas Corkill, 25, sailor
Margaret, 25
Thomas, 1

The 1841 census does not give any other details.
Ages are rounded, so 25 means 25-29