The Dalai Lama.
The Dalai Lama is the leading monk in Tibetan Buddhism. Followers of the religion believe the Dalai Lama is a reincarnation of a past lama that has agreed to be born again to help humanity. There have been 14 Dalai Lamas throughout history.
The Dalai Lama also governed Tibet until the Chinese took control in 1959. The current Dalai Lama, Lhamo Thondup, was born in 1935.