The area that grew around the monastery became known in Welsh as "Tyddewi", which means "David's house". In 519, the archbishop of Caerleon was moved to the monastery. "Tyddewi" was renamed "St Davids" in name of the saint who founded the place. The first cathedral that was built was attacked many times by the Vikings, and burned down in 1087. The cathedral that is there now was built by the Normans. Many pilgrims travelled to St Davids because Saint David was from there.