According to legend, the inhabitants of the Linth Valley were converted to Christianity in the 6th century by the Irish monk Saint Fridolin, the founder of Säckingen Abbey in what is now the German state of Baden-Württemberg. From the 9th century, the area around Glarus was owned by Säckingen Abbey, the town of Glarus being recorded as "Clarona". The Alemanni began to settle in the valley from the early 8th century. The Alemannic German language took hold only gradually, and was dominant by the 11th century. By 1288, the Habsburgs had claimed all the abbey's rights.