Kurš apprecējās ar Adelaide, Countess of Auxerre?

Adelaide of Auxerre (1251–1290) was ruling Countess of Auxerre in 1262–1290.

She was a daughter of Eudes of Burgundy and Mathildis II of Bourbon. In 1262 she succeeded her mother as Countess of Auxerre. In 1268 she married John I of Chalon, Lord of Rochefort, son of John – they had one child, William (died 1304).