Saint Kilian
The name is said to derive from Saint Kilian, an Irish missionary to Germany in the 7th century, who, according to the Acta Sanctorum, was born in Mullagh, County Cavan, Ireland c. 640. He departed for his mission to the continent with 12 apostles from Kilmacologue in the parish of Tuosist, County Kerry, Ireland. In 689 he was martyred in Würzburg, Franconia, Germany, and subsequently became the city's patron saint.