Madonna was born August 16, 1958 as "Madonna Louise Ciccone" and was officially "Madonna Louise Veronica Ritchie" during her marriage to Guy Ritchie (2000-2008).
Madonna has stated that she doesn't like to do duets, so there are not many people that she has sung with. But a few come to mind: Prince, Britney Spears, Ricky Martin, Antonio Banderas, Jonathan...