Tyche at The Musée des Beaux-Arts, Lyon

Tyche (English /ˈtaɪki/; from Greek: Τύχη, meaning luck; Roman equivalent: Fortuna) was the presiding tutelary deity that governed the fortune and prosperity of a city, its destiny. She is the daughter of Aphrodite and Zeus or Hermes. In literature, she might be given various genealogies, as a daughter of Hermes and Aphrodite, or considered as one of the Oceanids, daughters of Oceanus and Tethys, or of Zeus. She was connected with Nemesis and Agathos Daimon (good spirit). The Greek historian Polybius believed that when no cause can be discovered to events such as floods, droughts, frosts or even in politics, then the cause of these events may be fairly attributed to Tyche.