Hello Sue, I have been looking at Cornwall websites, and found some Corkhill information,

Marriage 1822 Mullion Thomas CORKHILL Agnes SOUTHWARD

Burials
09-Mar 1908 CORKHILL Agnes St Mawes age 73
11-Feb 1868 CORKHILL Thomas St Mawes age 74

Memorial Inscription
CORKHILL Thomas 07-Feb 1868 Churchyard Died St. Mawes. Agnes (wife) 16-Jan 1851 age 57.
Matthew (son) 10-Mar 1855 age 28.
Agnes (dau) 05-Mar 1908 age 78.

From, Genuki
ht tp://www.genuki.org.uk/big/Coastguards/C.html

close gap ht tp

BRITISH COASTGUARDS 1841 - 1901

NAME DATE & PLACE OF BIRTH
Corkhill, Thomas IOM 1795

LOCATIONS
1841 St Mawes CON
1851 St Mawes CON
1861 On pension at St Mawes, Just in Roseland, CON [RG9/1553/38]

FAMILY DETAILS
Wife: Agnes, c1796, not CON (d. by 1851). Children: Thomas & Matthew & John & William, 1826 & 1827 & 1829 & 1832, all CON; Sarah, 1831, Manaccan, CON; Agnes & Samuel, 1834 & 1836, Gunwalloe, CON.

John Corkhill

CORKHILL,J. A.,3,135

1830 Cornwall Pigot's Directory
Index by Rick Parsons
This index has *two* page numbers.
This is because the original volume was published in two
versions, one as part of a South West of England compendium
version, where Cornwall happened to be the first county, and
therefore the page numbering starts at 1, and secondly as
a compendium issue of 18 counties of Southern England, and
therefore the Cornwall pages start at page 135.
EMail: rick.parsons (at) bigfoot.com

Web Sites: www.parsons1998.freeserve.co.uk/
(R E N O W D E N One Name Study)
ht tp://west-penwith.cornwall.eu.org/
(West Penwith Resources, Cornwall)

This book is available on CD from Archive CD Books
==================================================
Web pages www.archivecdbooks.org

The CD containing scanned images of the whole of the 1830
Pigot's Directory for Cornwall is available from
The Archive CD Books Project.
www.parsons1998.freeserve.co.uk/