Whose feast day is October 15th?

The following saints have their feast day on October 15:

Antiochus of Lyon

Aurelia of Strasbourg

Callistus of Huesca

Cannatus

Deodatus of Vienne

Elizabeth van Arennest

EuthymiOS the Younger

Fortunatus

Gaius of Korea

Joachim Gieterler

Leonard of Vandoeuvre

Lucian of Antioch

Odilo

Sabinus

Severus

Teresa of Avila

Thecla of Kitzengen

Wulfram of Sens