In case you didn't know, we're talking about
Owston Ferry http://en.wikipedia.org/wiki/Owston_FerryLooking at the IGI batch for Owston - C030941 - there are two baptisms for KEIGHTLEY boys, sons of John and Mary around that time.
Of possible interest to you I think is the 1812 baptism of Charlotte, transcribed as daughter of John and Mary KETCHLEY.
In fact, I think all of these were "yours"
HARIOT KEETLEY Christening: 07 JUL 1808 Owston
JAMES KEIGHTLEY Christening: 25 MAY 1814 Owston
ROBT. KEIGHTLEY Christening: 21 MAR 1816 Owston
CHARLOTTE KETCHLEY Christening: 06 APR 1812 Owston
WM. KETCHLEY Christening: 06 MAY 1810 Owston
GEORGE KEETLEY Christening: MAY 1804 Owston
HANAH KEETLEY Christening: 17 OCT 1802 Owston
ANNE KEITLEY Christening: 07 MAR 1818 Owston
JOHN KEETLEY Christening: 13 JUN 1806 Owston
1851 census
Owston
Mary KEIGHTLEY (wid) 77 Pauper, Butterwick
Phebe (dau,unm) 56 Ferry (blind)
NB:
Butterwick will be East or West Butterwick a few miles further down the Trent - not Butterwick near Boston.
Burials at Owston-
John KEIGHTLEY 15 June 1832 (63)
Mary KEIGHTLEY 16 Aug 1857 (83)