Venerable Gallus, Irish missionary and hermit, enlightener of the Swiss.
Gallus was an Irish monk and companion of Saint Columbanus who preached among the pagans of the Lake Constance region. Remaining behind when Columbanus went to Italy, he lived as a hermit in the forest near the river Steinach.
He reposed around 640, and the great abbey of Saint Gall grew up on the site of his cell.
Feast day
On the New Calendar, Gallus of Switzerland is commemorated on October 16. Churches on the Old (Julian) Calendar keep the feast on October 29 of the civil calendar.
Also commemorated on October 16

Leontios, Dometios, Terentios and Domninos
Martyr, Λεόντιος, Δομέτιος, Τερέντιος και Δομνίνος
Holy Martyrs Leontios, Dometios, Terentios and Domninos.
John of Tourkolekas
Martyr, Ιωάννης ο Τουρκολέκας
Holy New Martyr John of Tourkolekas in Messenia, put to death by the Turks as a boy.
Longinus the Gatekeeper
Venerable, Λογγίνος ο φύλακας της θύρας
Venerable Longinus the Gatekeeper of the Kiev Caves.