Each cantrev king further commanded several lesser lords. In this essentially feudal system, Prydain's kings shared land and power with their lords, who swore oaths of fealty to help the kings keep peace in each region. File:CASTLE-PENRHYN.jpg Some of the named kingdoms of Prydain were Mawr, Rheged, Dau Gleddyn, and Cadiffor (south), and Fflewddur's Kingdom and Madoc (north). The notable exception to this system were the Free Commots of the east, whose people had no local king, swearing fealty only to the High King himself.