Thanks for pointing that out. It did see the photo but did not realize they were the same. I probably missed it because I was focussing on a photo that would both show the fuselage identification with the clear D and the one at the wheel cover at the same time. I think you cropped yours?
I used to live in the Volendam region and I know the folklore. Schilder is a very common name in Volendam, a small and close-knit community. Cor, brief for Cornelis isn't very distinguishing either. I suppose that explains the tradition to give people nicknames. Since people know you by that name (and it's for life) it makes sense to have a Facebook page by the nickname too. On the passenger list the official name is used of course: Cornelis Schilder.