Muirchu moccu Machtheni, in his highly mythologised seventh century Life of Patrick, says that St. Patrick lit a Paschal fire on this hill top in A.D. 433 in defiance of the High King Laoire who forbid any other fires while a festival fire was burning on the Hill of Tara. Historians and archaeologists agree that Muirchu has moved to Slane a fire lit elsewhere; The Hill of Slane can be seen from the Hill of Tara which is about away. According to Muirchu, Logaire was so impressed by Patrick's devotion that, despite his defiance (or perhaps because of it), he let him continue his missionary work in Ireland. It is somewhat more certain that Patrick appointed a bishop of Slane, Saint Erc.