Complex sentence: Tangton Gyelpo, Drubtob Tangton Gyelpo, or Thangtong Gyalpo, (1385-1464), a Nyingmapa yogi and polymath, physician, and treasure finder, who best known for founding of Ache Lhamo, the Tibetan opera, and his numerous iron bridges.
Split into simpler sentences: Tangton Gyelpo, Drubtob Tangton Gyelpo, or Thangtong Gyalpo (1385-1464) was a Tibetan Nyingmapa yogi and polymath, physician, and treasure finder. He was best known for founding of Ache Lhamo, the Tibetan opera, and his numerous iron bridges.