I am currently trying to get as far as possible in my Ahnentafel. Thanks to a couple of online sources, I have been able to find a lot of ancestry, google helped me get up to this website which offers information, recorded because that part of my Ahnentafel apparently had some heraldy in it (knights and lords, (very) unfortunately not my genealogy though).
This source links me from father to father to the following source on geneanet which seems to contain a "mythological" family tree, which "proves" my Ahnentafel links to Franconian kings.
Of course this is all pretty darn exciting, but I also find it a bit hard to believe. How legit is a source like this?