Simplify the following text for a Grade 6 native English-speaking person.
Original: Harold Clayton Lloyd , Sr. ( April 20 , 1893 -- March 8 , 1971 ) was an American film actor and producer , most famous for his silent comedies .
Simplified: Harold Clayton Lloyd , Sr. ( April 20 , 1893 -- March 8 1971 ) was a famous American actor and producer .