Wales have won the Grand Slam a total of 10 times, England are the only nation to achieve more with 12 wins, Wales last win was in 2008
It was Wales led by Ryan Jones.
This year, 2008!
England's last Grand Slam in the Six Nations was in 2003.
The Irish Women's Rugby team won the Grand Slam in 2013.
Wales won the Six Nations Championship in 2012 with a Grand Slam. This means that Wales won all 5 of their games.
I believe your referring to "The Grand Slam"? This is part of the 6 nations tournament where the international side that wins ALL of its game achieves "the Grand Slam" . In New Zealand rugby, the 'Grand Slam' is achieved when the All Blacks tour and defeat all four 'Home' nations: Ireland, England, Scotland and Wales.
The last time they won it was in 2010 when they also won the Grand Slam.
Scotland winning a Grand Slam
Yes, Wales won the 2008 Six Nations Rugby Championship. They won it by beating all five of the other teams, to complete a Grand Slam.
In Rugby, It is in the six nations when Wales, England, Scotland, Ireland, Italy and France all compete against each other in 5 matches. home and away varies each year. The grand slam is one if a team beats all of its opponents with Wales won in 2012.