[Facts] Re: What do the names Felisberto and Felisberta mean?
The usual etymology for Filibert assumes a purely Germanic origin and identifies the prototheme Fili with Modern High German viel "much, many". But there is a connection between Filibert and Phillip, and Filibert is seen as a door-opener for the foreign name Phillip that was one of the first foreign names to be adopted by people in Germany. A similar relation is assumed for Sigmund and Simon.