I should have made the dates clear for you. They are month-day; I'll type in the month below:

Source Civil register - Marriage
Archive location Groninger Archives
General Municipality: Ezinge, Groningen, NL
Type of record: Marriage Certificate
Record number: 3
Registration date: 04-May-1843
Groom Kornelis Klaassens Mulder*, 27, crop farmer
Date of birth: 18-Feb-1816
Place of birth: Grijpskerk, Groningen
Bride Anje Bernardina Julius de Boer, 23
Date of birth: 01-Feb-1820
Place of birth: Oldehove, Groningen
Father groom Klaas Pieters Mulder
Mother groom Itje Kornelis Westra, crop farmer
Father bride Julius de Boer, shop keeper
Mother bride Margrijtha Janssens, shop keeper