The time of the first two Hohenstaufens was also that of the greatest German historian of the Middle Ages, Otto, Bishop of Freising. The Cologne Chronicle, too, relates that Rainald was received in Cologne with the greatest honours, since the relics redounded to the ‘perpetual glory of Germany’. This chronicle regards the German emperors as successors of the old Roman ones and says, for example, that Frederick became the ninety-first successor of Augustus in the year 1903 after the foundation of Rome. The epoch of the Hohenstaufens was the golden age of German mediaeval poetry. The ideas of the German Church about the mission of an emperor were laid down in the grandiose play of the Antichrist. The Germans are described by Burkard as warlike and invincible in battle, loyal to their princes unto death and trusting only men of their own tribe.