 According to legend, the relic was given to the cathedral by Charlemagne who received it as a gift from Emperor Constantine VI during a crusade to Jerusalem.However, as Charlemagne's crusade is fiction, the legend lacks historical merit and was probably invented in the 11th century to authenticate relics at the Abbey of St Denis.In fact, the "Sancta Camisa" was a gift to the cathedral from Charles the Bald and there is no evidence for its being an important object of pilgrimage prior to the 12th century.