Simplify the following text for a Grade 8 native English-speaking person.
Original: Ronald James Padavona ( July 10 , 1942 â `` May 16 , 2010 ) , better known as Ronnie James Dio , was an Italian-American heavy metal vocalist and songwriter .
Simplified: Ronnie James Dio ( born Ronaldo Giovanni Padovan July 10 , 1942 - May 16 , 2010 ) was an American heavy metal singer .