Ki vette feleségül John Tristan, Count of Valois-t?

John Tristan (French: Jean Tristan; 8 April 1250 – 3 August 1270) was a French prince of the Capetian dynasty. He was jure uxoris count of Nevers from 1265 and of Auxerre and Tonnerre from 1268. He was also in his own right Count of Valois and Crépy, as an appanages of the crown, from 1268.

Yolande II or Yolande of Nevers (French: Yolande de Bourgogne), (December 1247 – 2 June 1280) was ruling Countess of Nevers between 1262 and 1280.