About Chas Mortimer
Charles Mortimer is an English former professional motorcycle short-circuit road racer and race-school instructor. He competed in the Grand Prix motorcycle road racing world championships from 1969 to 1979. He remains the only competitor to have won FIM Grand Prix races in the 125, 250, 350, 500 and 750 world championship classes. When Mortimer won the 1972 500cc Spanish Grand Prix on a Yamaha, it marked the first 500cc Grand Prix victory for the Japanese manufacturer.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.