pendragon

Origin

From Middle English Pendragon, borrowed from Welsh pendragon (“chief war leader”), from pen (“head; chief; principal, supreme”) (ultimately from Proto-Celtic *kʷennom (“head”)) + dragon (“dragon; commander, war leader”) (from Latin dracō (“serpent, snake; dragon”), from Ancient Greek δρᾰ́κων (drắkōn, “serpent; dragon”), possibly from δέρκομαι (dérkomai, “to see, see clearly (in the sense of something staring)”), from Proto-Indo-European *derḱ- (“to see”)). Compare Late Latin īnsulāris dracō (literally “dragon of the island”), used by the monk Saint Gildas (c. 500 - c. 570 AD) in De Excidio et Conquestu Britanniae (On the Ruin and Conquest of Britain) as an epithet of Maelgwn Gwynedd (died c. 547), the king of Gwynedd.