Ireland beat England to win their fourth Six Nations Grand Slam
Ireland skipper Johnny Sexton became the Six Nations all-time record points scorer after landing a penalty, also going on to convert Sheehan's double and another try by Robbie Henshaw.
It was a dream final Six Nations Test for the talismanic Irish fly-half.
"Bloody hell, what a team!" said Sexton. "We did exactly the opposite of what the coaches told us!
"But we did it in the end.
"It's like a dream I don't want to wake up from. This is what you dream of as a kid. I'm pinching myself."
Ireland head coach Andy Farrell -- who was Joe Schmidt's assistant when they won the Grand Slam in 2018 -- said it had been at one point "squeaky bum time" but he was delighted it had ended in their favour.
"It means so much to everyone here -- to be able to do a St Patrick's weekend and win a Grand Slam is always going to be special," said the 47-year-old Englishman, father of England fly-half ande skipper Owen.
Mission complete!