The super famous American Boxer Muhammad Ali was born on January 17, 1942. Muhammad was born in Louisville, Kentucky. He was originally name Cassius Marcellus Clay Jr.
When Muhammad was 12 years old, somebody stole his bicycle. Police officer (and boxing coach) Joe E. Martin encountered a very upset Muhammad. He was angry somebody stole his bike, and told the officer he was going to "whup" the thief when he found him. Joe E. Martin told Muhammad that he better learn how to box before he goes out looking for fights.
That was the beginning of a very long boxing career. Muhammad went on to be an olympic gold medalist and a professional boxing champion.
He was famous for his unusual boxing style. He claimed that he "Float like a butterfly, sting like a bee."
Learn more about Muhammad Ali at his official website here.