 Gregory had perhaps been inspired by his victory over the Holy Roman Emperor Henry IV in the Walk to Canossa that year.In his letter he promised to send two legates to Spain, Bishop Amadeus of Olorón and Abbot Frotard of Saint-Pons-de-Thomiéres.It is certain that these legates never entered Alfonso's kingdom, although they were in Catalonia in late 1077 and early 1078, and that the king and his ally, Abbot Hugh I of Cluny, requested another legate.