Edmund Hillary
Sir Edmund Percival Hillary (20 July 1919 – 11 January 2008) was a New Zealand mountaineer, explorer, and philanthropist. On 29 May 1953, Hillary and Nepalese Sherpa mountaineer Tenzing Norgay became the first climbers confirmed to have reached the summit of Mount Everest. They were part of the ninth British expedition to Everest, led by John Hunt.
Lev Sarkisov
On May 12, 1999, Sarkisov became the oldest man to have ever reached the peak of Mount Everest at the age of sixty years and one hundred sixty-one days, breaking the previous record held by Venezuelan climber Ramon Balanca Suarez. He was officially recognized by the Guinness World Records as the oldest mountaineer to have ever scaled the mountain. His record was surpassed in 2001 by American mountaineer Sherman Bull.