Mondsee Abbey () was a Benedictine monastery in Mondsee in Upper Austria. History The region of the Mondseeland, in which Mondsee is located, was formerly part of Bavaria. Mondsee Abbey was founded in 748 by Odilo, Duke of Bavaria on the ruins of a Roman settlement.According to legend, Duke Odilo was in the area with his wife and large entourage, got lost and was surprised by the night. He was at risk of falling high on a rock. But when the moon came out between the clouds, it made the water surface of the lake shine deep, which made the Duke aware of the danger. In gratitude for his salvation, Duke Odilo vowed to have a monastery built on the shores of the lake and gave the lake the name "Mondsee". The abbey tradition was that the first monks came from the St Peter's abbey of Salzburg and others also from Monte Cassino in Italy. In 788, after the fall of Duke Tassilo III, Mondsee became an Imperial abbey and over the centuries acquired extensive property. Mondsee had a very active scriptorium and became an important centre for book production in Upper Austria. Around 800 the Codex Millenarius, an illustrated Latin book of the Gospels was written at the abbey. In 831 King Louis the Pious gave the monastery to Regensburg Cathedral. Wolfgang of Regensburg, Bishop of Ratisbon, spent a year at Mondsee in 976. It was not until 1142 that it regained its independence, under Abbot Conrad II, otherwise Conrad of Mondsee. Conrad, formerly a monk of Siegburg Abbey, had been abbot of Mondsee since 1127, and was extremely successful in defending and regaining the rights and possessions of the monastery, to the extent that in 1145 he was murdered by a group of nobles at Oberwang nearby. He was venerated as a martyr and declared Blessed. Conrad was succeeded as abbot by Walter of Mondsee (died 17 May 1158), long remembered as a model by the community for his exemplary striving after virtue. He was buried in St. Peter's chapel in the abbey church. In 1506 possession of the Mondseeland passed from Bavaria to Austria. In 1514 Abbot Wolfgang Haberl established the abbey grammar school. After a period of decline during the Reformation and the consequent disturbances, the abbey entered a new period of prosperity. Under Abbot Bernhard Lidl (1727–73) and especially in connection with the celebration of