Jouarre Abbey was traditionally founded around 630 AD by the Abbess Theodochilde or Telchilde. She was inspired by the visit of St. Columban, the travelling Irish monk who inspired monastic institution-building in the early seventh century. As part of its Celtic heritage, Jouarre was established as a double community of monks as well as nuns, both under the rule of the abbess, who in 1225 was granted immunity from interference by the bishop of Meaux, answering only to the pope.
The Merovingian (pre-Romanesque) crypt beneath the Romanesque abbey church contains a number of burials in sarcophagi, notably that of Theodochilde's brother, Agilbert (died 680), carved with a tableau of the Last Judgment and Christ in Majesty, highlights of pre-Romanesque sculpture. In the mid-ninth century the abbey acquired relics of St. Potentian; the relics assembled at Jouarre attracted pilgrims. The reputation of the house stood so high the abbey received a visit from Pope Innocent II in 1131 and was able to house a synod in 1133. The abbess's submission to the bishop of Meaux did not come about until Bossuet held the post in 1690.
The abbey is an important pilgrimage center. A fortified town was built around it and gave birth to the present city of Jouarre.
At the time of the St. Bartholomew's Day massacre (1572), the abbess Charlotte of Bourbon (1547–1582) converted to Protestantism and escaped from the abbey in a cart of hay, and fled to Germany. She married William I of Orange-Nassau.
The present monastery buildings, once again occupied by Benedictine nuns, date from the eighteenth century; their traditional vegetable and fruit garden are notable.
References:Sigmaringen Castle was first mentioned in the year 1077 in the chronicles of Petershausen monastery. The oldest parts of the castle are concealed beneath the alterations made during the 17th and the 19th centuries. The secret of the earliest settlement built on this defendable rock will never be fully revealed: large-scale excavation work would be necessary, which the extensive land development renders impossible. Judging from the many Roman remains unearthed in the area around Sigmaringen, the 12th century keep known as the 'Roman Tower' could be traced back to a Roman predecessor.
The castle remains that have been preserved (gate, great hall and keep) date back to the Staufer period around 1200. The castle remains were integrated into subsequent buildings. The foundations of the castle buildings are to a large extent identical to the surrounding castle wall.
These remains give us a good idea of how the castle might have looked during the 12th century.