The record for Kouwelil I am assuming you have found this on Genlias:

Source Civil register - Death
Archive location Streekarchief Goeree-Overflakkee
General Municipality: Ouddorp
Type of record: Overlijdensakte
Record number: 34
Registration date: 13-08-1844
Deceased Adriaantje Kouwelil
Gender: V
Date of death: 13-08-1844
Age: 78
Place of death: Ouddorp
Father Pieter Pieterse Kouwelil
Mother Jannetje Caltens Aleman
Partner Jan Luime
Relationship: Echtgenote
Additional information Jan Luime died in 1822
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not a very common name found on the from the cd: