{74} In the same way the emperor had the right to demand ships for the transport of himself and his men. 104. Grounds for the Quarrel between Adrian IV and Frederick I. Letter of Eberhard, Bishop of Bamberg, to Eberhard, Archbishop of Salzburg, 1159. Ragewin, Gesta Frid., IV, c. 34; M. G. SS. folio, XX; Doeberl, IV, no. 38. Although the stirrup episode and the Besançon episode were ended without a rupture between Frederick and Adrian, the fundamental question between them was not yet settled. Frederick continued to act in accordance with his ideas of what his office demanded, thus giving deep offence to the pope. The various matters in which the pope felt that Frederick had offended are set forth in this letter. They involve the deeper question of supremacy. The relations between the pope and emperor were becoming more and more strained. Although Frederick had previously refused to consider the propositions of the commune of Rome, he now received their ambassadors courteously. The people of the city wished to obtain his recognition of their government. Since the pope was obdurate Frederick threatened to make common cause with the rebellious city, hoping, no doubt, that Adrian would thereby be compelled to sue to him for terms. To his reverend father and lord, Eberhard, archbishop of Salzburg, Eberhard, by the grace of God bishop of Bamberg. ... That perilous time seems near at hand when strife shall arise between the king and the pope. The cardinals Octavianus and William, former archdeacon of Pavia, were sent by pope Adrian to the emperor with a message which began with a conciliatory introduction but which contained most vexatious matter. For instance, they said: the emperor must not send ambassadors to the city of Rome without the consent of the pope, as all the magisterial power in Rome and all the regalian rights there belong to St. Peter; the _fodrum_ must not be collected from the papal estates except at the time of the imperial coronation; Italian bishops should take only the oath of fidelity to the emperor and not the oath of homage [see no. 214]; bishops shall not be required to entertain the ambassadors of the emperor in their palaces; the following possessions, belonging of right to the Roman church, must be restored: Tivoli, Ferrara, Massa, Fiscaglia, all the lands of the countess Matilda, all the land from Aquapendente to Rome, the duchy of Spoleto, and the islands of Sardinia and Corsica. The emperor was willing to do justice in these matters if the pope would give him justice in return [that is, the emperor was willing to submit each matter to trial and abide by the decision, if the pope would do the same], but the cardinals were only empowered to receive justice and not to give it, for they said that they could not bind the pope. The emperor on his part then made the following complaints: that the treaty of Constance had not been kept by the pope in the matter of his promise not to make peace with the Greeks,