we dont know when sir ed climbed mt ed but it was earlier than 1990
May 1953
Edmund Hillary became interested in mountaineering while in secondary school, making his first major climb in 1939, reaching the summit of Mount Ollivier.
No he was not.
Sherpa Tenzing Norgay.
yes
Ambition, excitement and the wish to be first to climb it
he became helpful and climbed mt Everest for the first time
29th may 1953
sir edmound hillary
Sherpa Tenzing Norgay
a long time
He famously quipped that he climbed it "because it was there"