St. Kilian was an Irish missionary who lived during the 7th century. He is best known for his efforts to spread Christianity in what is now Germany. He traveled from Ireland to Bavaria and is credited with converting many people to the Christian faith. St. Kilian is the patron saint of Würzburg, a city in Germany where he was martyred. His feast day is celebrated on July 8th. St. Kilian is often depicted in art holding a cross and a sword, symbolizing his role as a missionary and his martyrdom.