According to the extant "Bingonokuni Fudoki (ancient records of culture and geography of Bingo Province)" included in "Shaku Nihongi (Chronicle of Japanese History)," he was a prince of Buto Tenjin, his name was written as Gozu Tenno, he married a daughter of Shakara Ryuo, one of the Hachidai Ryuo (Eight Dragons) and he had eight princes.
『釈日本紀』内の『備後国風土記』逸文には武塔天神の太子として登場し、牛頭天皇と表記され、八大竜王の一、沙竭羅竜王の女を妃として8人の王子を生んだという。