Original: Kleppen, from Bø, Telemark, celebrated his 100th birthday in March 2007 and, having participated in the 1928 Winter Olympics, was Norway's oldest living Olympian.
Simplified: Kleppen, from Bø i Telemark, became 100 years old in March 2007 and, having been part of the 1928 Winter Olympics, was Norway's oldest living Olympian.