Pellegrinus I (died 8 August 1161), also called Pilgrim of Ortenburg, was Patriarch of Aquileia in northern Italy from 1130 to 1161. Pellegrinus was a member of a noble family of Trentino, the lords of Povo.He was a younger son of Duke Ulrich I of Carinthia.He was appointed Patriarch of Aquileia in 1130. He succeeded the Patriarch Gerardo (1122–1128).He was a faithful supporter of the emperors Conrad III and Frederick Barbarossa during their struggle against Rome.He reached an agreement of "peace and friendship" (pax et amicitia) with Archbishop Conrad I of Salzburg (died 1147) whereby the latter agreed to pay tithes to Aquileia for those properties which the archdiocese held in the patriarchate. Conrad's example was followed by pledges to pay their tithes from the others present when the