A childhood belief about father christmas

I used to believe that Sinterklaas (a Dutch mythical figure who is said to come to the Netherlands every year around December, and then on the 5th of December -his birthday- he rides with a white horse on the roof to throw presents through the chimneys of houses where the good children live, while the bad children are taken away in a sack to Spain -as far as I know, Father Christmas was based on this figure) lived in the house next to that of my grandparents, because it was a big house and the inhabitants had stacked a lot of toilet paper in front of one of the windows, and I figured that was because Sinterklaas and all his Zwarte Pieten (Black Peters, the helpers of Sinterklaas) lived there, and because they were with so many people, they would need a lot of toilet paper. I believed this even though I also believed that Sinterklaas lived in Spain (while my grandparents lived in the Netherlands), and would often look outside my bedroom window in the hopes of seeing one of the Pieten (who I believed would only come out at night, for some reason I also believed that Sinterklaas and the Pieten would all be asleep during the day).