Although, already married Anu-Dara, granddaughter of Ochirtu, he came into conflict with his grandfather-in-law. Fearing of Galdan's popularity, Ochirtu supported his uncle and rival Choqur Ubashi who refused to recognize Galdan's title. The victory over Ochirtu in 1677 resulted in the establishment of hegemony over the Oirats. In the next year the Dalai Lama gave the highest title of Boshoghtu (or Boshughtu) Khan to him, Galdan thus united the entire Oirats in Zungaria and Western Mongolia.