Thanks.It is old Dutch/vlaams and has to do with the fishing community, the best translation I could come up with is in French:
Refuge des pécheurs, priez pour nous.
En mémoire/souvenir de Monsieur ....
Et Madame....
sa deuxième épouse (literalement: ménagère/housewife)
Not very far from the sea, but nonetheless. Around 30 km.
This part of the country, like a lot of Holland is below sea level and Volckerinckhove where we had lunch is near the canals and marshes of Watten. Maybe that's the reference.
The Germans flooded the region by opening the sluice gates in 1944, very much like they did in Holland.
Paul