some sources tell a different story. when gungsong gungtsen turned 13 (nowadays 12 as tibet used a different calendar), his dad gampo retired, so gungsong ruled for five years. they say gungsong married 'a-zha mang-mo-rje when he was thirteen, and they had a son, mangsong mangtsen (r. 650-676 ce). gungsong then died when he was 18. his dad gampo then took the throne again. gungsong gungtsen may be buried at donkhorda, the site of the royal tombs, to the left of his grandfather namri songtsen (gnam-ri srong-btsan). the dates for these events are very unclear.