Hmm ... the IGI is confusing me!
ELIZ SENTANCE
Christening: 17 JAN 1800 Edenham
ELIZABETH SENTENCE
Spouse: WILLIAM PALMER Marriage: 31 AUG 1826 Edenham, Lincoln, England
Sorry to confuse you too! Perhaps just a coincidental red herring

because-
MARY ANNE PALMER
see 1841 Census Christening: 12 OCT 1821 Pinchbeck, Lincoln, England
Father: WILLIAM PALMER Family
Mother: JANE
Or perhaps the Wm PALMER found in 1841 is not the right one .... if you definitely want the one with Elizabeth, it probably isn't.
PANIC OVER1841
615-21/5
North St, Bourn
William PALMER 45 Farmer
Elizabeth 41
Henry MACHIN 12
All born in LincsThey didn't show up in the index as the name was entered in the census as
"Palmer WILLIAM" and Liz was "Elizabeth WILLIAM"!

Finally, the "other" William PALMER (still in Pinchbeck) is aged 52 in 1851. He was born Pinchbeck.
The IGI has a baptism for 1796 but NOT for 1799.