The letters delivered from Manuel I to Louis VII at Ratisbon proposed that Louis send a delegation to Constantinople, to be conducted by the Byzantine ambassador Mauros. Alvisus, bishop of Arras, Bartholomew the chancellor and Archibald, count of Bourbon are mentioned as envoys at this time. Everard of Breteuil, Manasses of Bulles, Anselm, seneschal of Flanders and Everard of Barres are indicated later as being their colleagues, during a struggle with Pechenegs. There may have been others