On display in the south aisle of the choir in Carlisle Cathedral is a replica of a 12th century sword. Similar in size, weight and design, the single handed cruciform sword was commonly used during the Middle Ages. Such arming swords were the standard military sword of the knight and descend from the swords from the Migration Period and the Vikings.
The sword is said to replicate one of the swords used to murder the 12th century Archbishop of Canterbury, Thomas Becket. The original sword is thought to have belonged to the Anglo Norman knight Sir Hugh de Morville, Lord of Westmorland, who was one of the murderers of Becket.