Arganthonios
Arganthonios (Ancient Greek: Ἀργανθώνιος) was a king of ancient Tartessos (in Andalusia, southern Spain) who according to Herodotus, was visited by Kolaios of Samos. Given the legendary status of Geryon, Gargoris and Habis, Arganthonios is the earliest documented monarch of the Iberian Peninsula.