John I. Crescentius

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Coat of arms of Crescenzi .

John I Crescentius († 988 ) came from the Roman family of the Crescentii, who were quite influential in Rome in the 10th and 11th centuries . He was Count of Terracina, son of Crescentius de Theodora and brother of Crescentius I Nomentanus . He was (probably 985) awarded the title of Patricius of Rome ( Patricius Romanorum ), where he ended riots in the city. He was also instrumental in the election of Pope John XV. involved. Subsequently, the power of his house was considerable, but he died in 988; however, his brother continued to play an important political role.


  • Federico Marazzi: Crescentii . In André Vauchez, Richard Barrie Dobson , Michael Lapidge: Encyclopedia of the Middle Ages . James Clarke & Co., Cambridge / Chicago 2000, ISBN 978-1-57958-282-1 , p. 383
  • Mathilde Uhlirz: Yearbooks of the German Empire under Otto II and Otto III. Second volume: Otto III. 983-1002. Publishing house Duncker & Humblot, Berlin 1954, especially p. 59f. and p. 119 ( digitized version ; PDF; 43.0 MB).