Hy,
Difficult to answer.
First : if the first child was born about 1696 Jacob CADOT was certainly aged more than 20and was born around 1650 1676.
Secund: in 1664 the protestants received the right to fulfill their own records.
Third : in 1685 they lost that right due to the revocation of the Edict de Nantes.
Fourth: we may suppose that Françoise DIEL was not French. Her name dont sound French. If you try GeneaNet you can verify they are more DIEL in Netherlands than in France.
I tried to found something in Dieppe; it seems to be only two (?) parishes: St Jacques and Sy Remy
http://huguenots.free.fr/dieppe.htm: In this site appear one Anne CADOT and also some ASSELIN
Sorry for my too few help.
Pierre JACQUOT