In 1075 William de Warenne, who came from Normandy to England with William the Conqueror, set out with his wife Gundrada on a pilgrimage to Rome. Travellers from the north of France and England to Italy then usually took the Roman road, the Via Agrippa, which led from Boulogne, through Burgundy, by Avallon, Autun and Mâcon, to Lyons. ‘We went to many monasteries in France and Burgundy to offer our prayers,’ wrote William de Warenne, ‘and when we had come to Burgundy we learnt that we could not safely travel through it on account of the war between the pope and the emperor, so we turned aside to the monastery of Cluny, a great and holy abbey in honour of St. Peter, and there we adored and besought St. Peter.’