Llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogochball is a town in Walesball. His name can be shortened into Llanfairpwll, Llanfair PG, or Llanfairpwllgwyngyll. He is famous for his very long name. Here is a song to remember his name. With 58 characters, he has the longest place name in Europe and the second longest official one-word place name in the world.
It is normal to say it must have a great history or more stuff, but all that we really know is that the keyboard that was used for writing the name of this city, but it never worked again. If you want a real history of him, go to the Wikipedia article.