I have never heard of Fibblesnork or Minimundo but this is a site that I have found to be useful resource. http://www.rittersets.de/
It has every castle faction listed from 78 - the current line. The sets are listed by faction, but you can search by year or number. It has all the sets and images of each figure that came with the sets.
The only problem is that the site is in German but its quite easy to navigate even if you can't read German.
Hope its of some use.