In Greek mythology, Cadmus (; ) was the legendary Phoenician founder of Boeotian Thebes. He was, alongside Perseus and Bellerophon, the greatest hero and slayer of monsters before the days of Heracles. Commonly stated to be a prince of Phoenicia, the son of king Agenor and queen Telephassa of Tyre, the brother of Phoenix, Cilix and Europa, Cadmus could trace his origins back to Zeus. Originally, he was sent by his royal parents to seek out and escort his sister Europa back to Tyre after she was abducted from the shores of Phoenicia by Zeus. In early accounts, Cadmus and Europa were instead the children of Phoenix. Cadmus founded or refounded the Greek city of Thebes, the acropolis of which was originally named Cadmeia in his honour. Cadmus' homeland was the subject of significant disagreement among ancient authors. Apollodorus identifies it as Phoenicia, but Tyre, Sidon, and even Thebes in Egypt are referenced in different accounts. His parentage is sometimes modified to suit, e.g. claims of Theban origin name his mother as one of the daughters of Nilus, one of the Potamoi and deity of the Nile river. Overview Cadmus was credited by the Greek historian Herodotus with introducing the original Phoenician alphabet to the Greeks, who adapted it to form their Greek alphabet. Modern scholarship has almost unanimously agreed with Herodotus concerning the Phoenician source of the alphabet. Herodotus estimates that Cadmus lived sixteen hundred years before his time, which would be around 2000 BC. Herodotus had seen and described the Cadmean writing in the temple of Apollo at Thebes engraved on certain tripods. He estimated those tripods to date back to the time of Laius the great-grandson of Cadmus. On one of the tripods there was this inscription in Cadmean writing, which, as he attested, resembled Ionian letters: ("Amphitryon dedicated me from the spoils of [the battle of] Teleboae."). Although Greeks like Herodotus dated Cadmus's role in the founding myth of Thebes to well before the Trojan War (or, in modern terms, during the Aegean Bronze Age), this chronology conflicts with most of what is now known or thought to be known about the origins and spread of both the Phoenician and Greek alphabets. The earliest Greek inscriptions match Phoenician letter forms from the late 9th or 8th centuries BC—in any case, the Phoenician alphabet properly speaking was not developed until around 1050 BC (or after the Bronze