Necromancer or in Dutch, a ghost charmer, is a magician who does magic concerning the dead, demons and devils. In the “Torch der Nederduitsche Tale” from 1722 it says: The word Nikker is the same as the word Nekker and only later became a swear word for people with dark skin color. I didn't know what it meant, but from the word black and the angry way he spoke, I knew this wasn't a positive thing. I walked down a little alley where a boy ran to meet me. When I was a little girl, I took my mother's shopping list to our butcher. He's lurking for children he could drown. Then you got Glup Guy, this one pulls the kids into the water by their legs. In other places they called him Pietjen Haak, Piet den Haak or den Akkervent. Zeeuws-Vlaanderen, Zuid-Beveland and Walcheren knew him as Jan Haak. On island Tholen this was Oosje Pik (Oesje Pik or Jeoosje Pik). The Nekker was an evil water spirit and knew many different names in the different towns of Zeeland. These sea spirits or water spirits are called Nekkers. From this moment on, all fishermen returned their first caught fish to the water spirit.
As a result, the sea spirit left them alone and they could safely go home.
One of the fishermen came up with the idea of returning their first caught fish to these sea spirits as a sacrifice. Often fishermen had trouble getting back on land because a sea spirit did not leave them alone.
