Origin: Latin suffix -ary
Hillary has 2 different meanings across 2 categories:
New Zealand mountaineer who in 1953 first attained the summit of Mount Everest with his Sherpa guide Tenzing Norgay (born in 1919)
"The expedition remembered Hillary as the pioneering climber who, alongside Tenzing Norgay, reached the top of Everest for the first time."
A female given name from Latin ultimately derived from the Latin Hilaria.
"Hillary was born with her grandmother's name, a traditional choice for girls seeking a classic and cheerful identity."
The name Hillary comes from the Latin word hilarius, which originally meant cheerful. It entered English through French and is related to the modern adjective hilarious.