Wuwei, Gansu
During Juqu Mujian's reign, a princess dowager was mentioned, without any names, and it could have been Princess Meng or Juqu Mujian's birth mother. If it was Princess Meng, then she died in the Northern Wei capital Pingcheng (平城, in modern Datong, Shanxi) after Juqu Mujian's capital Guzang (姑臧, in modern Wuwei, Gansu) had fallen to Northern Wei forces and he had been taken captive, but she was still buried with honors due a princess.