The IGI [FamilySearch.org] has extracted entries for the children of John Corkill and Jane Mylrea:
EMILY JANE CORKILL Christening: 01 SEP 1872 Lonan, Isle Of Man
MARY ANNE CORKILL Christening: 23 OCT 1870 Lonan, Isle Of Man
JOHN JAMES CORKILL Christening: 03 AUG 1874 Lonan, Isle Of Man.

Brian Lawson's index has this registered birth:
CORKHILL, Thomas Edward 2 Jan 1880, Dou 248, [father] CORKHILL, John, [mother] MYLREA, Jane.
You could order this cert from the Registry, using the refs provided, to get further information. www.gov.im/registries/general/civilregistry/
For email see 'Contacts'.

Does the bible say whether the dates are births or deaths? If this is all it has, how did you know they were from the IOM? Do you have other information as well?

Sue