The Name of the Grandfather is the fourteenth episode of Season 20. It aired on March 22, 2009. The episode was written by Matt Marshall (II) and directed by Ralph Sosa.
The Simpsons travel to Ireland so that Grandpa can have a final drink at O’Flanagan’s Pub, an old watering hole of his. But when the small town of Dunkilderry isn’t quite what Grampa remembers it as and O’Flanagans has become a rundown, empty pub, he and Homer decide to buy it and fix it up.