Ronaldo de Assís Moreira is a Brazilian footballer, also known as Ronaldinho "Gaúcho" (due to him being from the Rio Grande do Sul state of Brazil), or simply and most commonly Ronaldinho. He became a naturalized Spanish citizen in January 2007. Ronaldinho, meaning "little Ronaldo", is better known in Brazil by the nickname Ronaldinho "Gaúcho", in order to distinguish him from Ronaldo (already called Ronaldinho in Brazil). Wikipedia
The definitive Wikipedia entry for Ronaldinho. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Ronaldinho