Simplify the following text for a Grade 7 native English-speaking person.
Original: Richard Patrick Dunne ( Irish name : RisteÃ rd Ã `` Duinn ; born 21 September 1979 in Tallaght ) is an Irish footballer who plays in the Premier League as a defender for Aston Villa .
Simplified: Richard Dunne ( born 21 September 1979 ) is an Irish football player . He plays for Aston Villa and Republic of Ireland national team .