About Bobo Olson
Carl "Bobo" Olson was an American boxer. He was the World Middleweight champion between October 1953 and December 1955, the longest reign of any champion in that division during the 1950s. His nickname was based on his younger sister's mispronunciation of "brother". The first real test of Olson's career came on March 20, 1950, Olson's record at this point was 40 wins and 2 losses, against the Australian Dave Sands. Despite his great record it was clear that Olson was still too inexperienced to be fighting at that level. He had won his first three contests, two by knockout, before his true age was discovered.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.