Just for reference the Matilda Matkin marriage image says:-
Married on 27th January 1845 at Caythorpe, Lincs. John Daniel, age 27, widower, labourer. Father John Daniel, labourer.
Matilda Matkin, age 25, spinster, father Thomas Matkin, carpenter.
Both living in Caythorpe and the witnesses are William and Elizabeth Matkin.
John previously married then, so same man or a different John Daniel?