As in 1016 King Rudolph III of Burgundy, ruler of the Kingdom of Arles was left without a male heir, Henry II seized the opportunity and forced King Rudolph III to name him - Henry his royal successor. Henry II, the son of Rudolph's sister Gisela of Burgundy was his nephew, and his closest living male relative. However, Rudolph was still alive when Henry II died in 1024. Soon emperor Conrad II, as Henry II's imperial successor claimed he is also entitled to Henry II's rights on the Burgundian succession, which Rudolph disputed. Count Odo II of Blois, who had strong family ties with Rudolph, also emphasized his right in the succession. Conrad II met Rudolph III in August 1027 near Basel to settle the dispute. Henry II's widowed wife, Empress Cunigunde of Luxembourg, mediated between the two parties. An agreement was reached that allowed Conrad II to succeed to the Burgundian throne upon Rudolph's death under the same conditions as Henry II. In return, Rudolph was allowed to retain independent rule over his kingdom.