Robert of Châtillon explained
Robert of Châtillon (died 1210), duke and bishop of Langres from 1205 until his death. He is also notable as a peer of France[1] and a cousin of Bernard of Clairvaux.
References
- Web site: Evêché de Langres . 2011-03-31 . 2016-09-08 . https://web.archive.org/web/20160908030235/http://www.heraldique-europeenne.org/Regions/France/Langres.htm . dead .