L'Étanche Abbey is a former Premonstratensian monastery founded in the 12th century, the ruins of which are near the modern village of Deuxnouds-aux-Bois, in the commune of Lamorville.
The abbey of Notre-Dame de l'Étanche was founded in about 1144 by Philippe, abbot of Belval, in a secluded valley then known as Faverolles, near Deuxnouds-aux-Bois. The first patrons of the foundation were Albéron de Chiny, bishop of Verdun, and Bertrand le Loup and his nephew Albert, seigneurs of Faverolles, in whose lands the community was settled. The abbey church was consecrated in 1147. The earliest existing charter dates from 1157.
Nearby there was at first a Premonstratensian convent, which was dissolved in time. The modest abbey possessed a priory at Benoîte-Vaux, a famed place of pilgrimage in Lorraine.
The structures were utterly destroyed by the Swedes in 1632, during the Thirty Years' War, and were not rebuilt until 1743, with nine monastic cells in a range. The chapel was completed in 1770. Three abbés of L'Étanche were of note: Dom Dominique Callot, a student of chemistry and heraldry; Dom Edmont Maclot, author of pious works; and Dom Jean François Joseph Boucart, who assembled a collection of medals and a prestigious library, since dispersed.
References:The Clementinum is a historic complex of buildings in Prague. Until recently the complex hosted the National, University and Technical libraries, the City Library also being located nearby on Mariánské Náměstí. The Technical library and the Municipal library have moved to the Prague National Technical Library at Technická 6 since 2009. It is currently in use as the National Library of the Czech Republic.
Its history dates from the existence of a chapel dedicated to Saint Clement in the 11th century. A Dominican monastery was founded in the medieval period, which was transformed in 1556 to a Jesuit college. In 1622 the Jesuits transferred the library of Charles University to the Klementinum, and the college was merged with the University in 1654. The Jesuits remained until 1773, when the Klementinum was established as an observatory, library, and university by the Empress Maria Theresa of Austria.