Hi,
There are very few Parish registers for Tetworth/stotford on line.
Marriage 1.1.1829 for David and Frances, could not find in Church Records, however there is a report in The News (London) published 5.1.1829:-
On the first inst., at Everton Church, Bedfordshire. Mr. David Waldock, of Stotford to Miss Frances Lucy Marriott of Tetworth, Huntingdonshire.
The Church would be St. Mary’s, Everton, Bedfordshire.
The only Census, on which Frances Lucy appears prior to her death is 1841. She is Resident in Tetworth, Huntingdonshire and states she was not born in County of Huntingdonshire however she may not have been born in Tetworth. Her age is 50 due to rounding down of ages in the 1941 census she would have been born between 1787 - 1791.
Parish Info:-
https://discovery.nationalarchives.gov.uk/details/r/262229ca-a2dc-442f-a616-11d83e916b9bSpendlove