Simplify the following text for a Grade 6 native English-speaking person.
Original: Olavo Rodrigues Barbosa , best known as Nena , ( 11 July 1923 -- 17 November 2010 ) was a Brazilian former football player .
Simplified: Olavo Rodrigues Barbosa ( born 11 July , 1923 - died 17 November 2010 ) was a former Brazilian football player . He was known as Nena .