Petraeus
2. A surname of Poseidon among the Thessalians, because he was believed to have separated the rocks, between which the river Peneius flows into the sea. (Pind. P. 4.246, with the Schol.)
From William Smith (ed.), Dictionary of Greek and Roman Biography and Mythology. Text provided under a CC BY-SA license by Perseus Digital Library, http://www.perseus.tufts.edu, with funding from the National Endowment for the Humanities and Tufts University. Data accessed from https://github.com/PerseusDL/canonical-pdlrefwk/ on 17 October 2026.