Proper noun
an Ancient Greek thinker from the island of Syros, who authored a cosmogony that bridged the mythological thought of Hesiod and pre-Socratic philosophy (c. 620-550 BC)
an historian and genealogist from Athens (fl. c. 465 BC)
an historian from the Greek island of Leros, possibly the same person as the Athenian historian (before 480-477 BC)
Source: en.wiktionary.orgIn the old cosmogonies – Hesiod (8th – 7th century BC) and Pherecydes (6th century BC) – Zeus establishes his order in the world by destroying the powers which were threatening this harmony, (the Titans ). Source: Internet
Pherecydes of Syros (6th century BC), believed that there were three pre-existent divine principles and called the water also Chaos. Source: Internet