Clan McDuck
The Clan McDuck is the clan from which a great number of Walt Disney's comicbook characters held their origin. It is known since 1922. The most famous members of the clan are Scrooge McDuck and Donald Duck.
http://www.ualberta.ca/~bderksen/temp/mcduckfamilytree.gif
additional geneological resources at http://goofy313g.free.fr/calisota_online/trees/index.html