. "a king of Egypt , son of Belus (acc. to others, of Neptune), and brother of Danaüs. He had fifty sons , to whom the fifty daughters of Danaüs were espoused" . "a king of Egypt , son of Belus (acc. to others, of Neptune), and brother of Danaüs. He had fifty sons , to whom the fifty daughters of Danaüs were espoused" . .