Simplify the following text for a Grade 6 native English-speaking person.
Original: Leovegildo Lins da Gama JÃ nior ( born June 29 , 1954 ) , known simply as JÃ nior , was a Brazilian football player .
Simplified: Leovegildo Lins da Gama JÃ nior ( born 29 June 1954 ) is a former Brazilian football player .