to Alchibolad. Northern Khalha was further divided to Gersenz's 7 sons. The most powerful of Gersenz's grandchildren Abtai received the title of Khan from the Dalai Lama , and his son Eriyehii Mergen Khan founded the dynasty of the Tushiyetu Khans, who ruled the central heartland of Northern Khalha. Greatgrandson of Gersenz