From BiblePortal Wikipedia

Cyclopedia of Biblical, Theological and Ecclesiastical Literature [1]

(CLARAVALLIS), the name of a celebrated Cistercian abbey, in a valley of the Department Aube, in France. Bernard became its abbot in 1115, and the monastery was the model of monasticism in the 12th and 13th centuries. Neander, Ch. History, 4, 254. (See Bernard); (See Cistercians).

The Nuttall Encyclopedia [2]

A village of France, on the Aube, where St. Bernard founded a Cistercian monastery in 1115, and where he lived and was buried; now used as a prison or reformatory.