Citation Hunt

The Wikipedia snippet below is not backed by a reliable source. Can you find one?

Click I got this! to go to Wikipedia and fix the snippet, or Next! to see another one. Good luck!

In page Brychan:

"

The sons listed in the Cognacio Brychan, De Situ Brecheniauc and the genealogies of Jesus College MS 20 are Cynog, Rhain Dremrudd, Clydwyn, Arthen, Papai, Dingad, Berwyn and Rhydog. Also listed, but not in all three, are Cynon, Pasgen, Cylflifer, Marthaerun and Rhun. Other Welsh sources claim the following additional sons: Caian, Cynbryd, Cynfran, Cynin, Dogfan, Dyfnan, Dyfrig, Hychan, Llecheu, Neffei, Rhawin, Llofan, Llonio, Heilin, Afallach and Gwynnws.