Complex sentence: Ayu Khandro, also known as Ayu Khandro Dorje Paldrön, (1839CE--1953CE) was a teacher of Dzogchen and Tantric Buddhism in East Tibet.
Split into simpler sentences: Ayu Khandro, also known as Ayu Khandro Dorje Paldrön, lived from approximately 1839CE to 1953CE. She was a teacher of Dzogchen and Tantric Buddhism in East Tibet.