Cossonay (noble family)

The Lords of Cossonay were a noble family from Vaud . In a deed of donation to the Romainmôtier monastery from 1096, Ulrich was the first representative to be mentioned. The family castle was located in the town of the same name , northwest of Lausanne. With Humbert, Ulrich's son, they are also referred to as the lords of Prangins and Nyon . After the death of Humbert's grandson Jean, the family split into three branches. The main line of Cossonay ruled Cossonay , L'Isle , Bercher and Surpierre . Jeans son Guillaume founded the branch of the Lords of Prangins . Since the middle of the 13th century the family tried to counter the expansion of the Counts of Savoy in the area north of Lake Geneva. With Jean and Aymon they provided two bishops of Lausanne . The last male representative of the family, Louis III, served the Counts of Savoy as a military and diplomat. After the family died out, its property fell to the Counts of Savoy.

family members

• Jean de Cossonay († 1273), from 1240 Bishop of Lausanne
• Aymon de Cossonay († 1375), from 1355 Bishop of Lausanne

Web links

• Bernard Andenmatten: Cossonay, de. In: Historical Lexicon of Switzerland .