It was probably then that he began working—possibly as a "", a "master of the art of writing letters"—at the court of Rainald of Dassel, the bishop elector of Cologne and Archchancellor to Frederick Barbarossa, Holy Roman Emperor, about which he wrote, according to Ernst Robert Curtius, "he most brilliant stanzas" among the many written about and/or for him during the 35 years of his reign. His references to Salerno, Vienna, and Cologne in his poems, as well as several details gleaned from the Archchancellor's court displacements, suggest that he did travel around northern Italy, Provence, Burgundy, Austria and Germany during his life. It is known that the Archpoet lived for some time—possibly the last years of his life—at the monastery of St. Martin in Cologne. As is the case with many medieval and/or anonymous authors, very little else can be said with certainty about his life.