Εὐρυκρατίδης
From LSJ
νᾶφε καὶ μέμνασο ἀπιστεῖν → keep a clear head and remember not to believe a thing (Epicharmus fr. 250)
Wikipedia EN
Eurycratides (Greek: Εὐρυκρατίδης, "wide ruler") was the thirteenth king of Sparta from the Agiad dynasty. He succeeded his father Anaxander around 615 BC and reigned during a devastating period of war with Tegea. In 590 BC, Eurycratides was succeeded by his son Leon ("lion"). His grandson was King Anaxandridas II.