Abbo surnamed CERNUS (the crooked), a French monk, who was also called Abbo Parisiensis because he was of the monastery of Saint-Germain-des- Pres, is said to have died in 923. He was present at the siege of Paris by the Normans in 887. Of this siege he wrote the history in a poem in three books, which has been admitted into Pithou's and Duchesne's collections. A more correct edition, with notes and a French translation, may be seen in the Nouvelles Annales de Paris (1753, 4to). There are also Five Select Sermons under his name in D'Achery's Spicilegium — (vol. ix); and in Bibl. PP. (Colon. 1618), vol. 5, is Abbonis Epistola ad Desiderium Episc. The third book of the Siege, addressed to the clergy, has been omitted by his editors, as having no connection with the history. See Chalmers, Biog. Dict. s.v.; Landon, Eccles. Dict. s.v.; Hoefer, Nouv. Biog. Generale, s.v.