Simplify the following text for a Grade 5 native English-speaking person.
Original: Padma Bhushan , Supradipta-Manyabara-Nepal-Tara Tenzing Norgay , GM ( late May 1914 â `` 9 May 1986 ) born Namgyal Wangdi and often referred to as Sherpa Tenzing , was a Nepali-Indian Sherpa mountaineer .
Simplified: Tenzing Norgay ( May 29 , 1914 â `` May 9 , 1986 ) was a Sherpa climber .