Saint Ansegisus (c. 770 – 20 July 833 or 834) was a monastic reformer of the Franks.

Saint Ansegisus
Bornc. 770
Died(833-07-20)20 July 833 or 834
Venerated inEastern Orthodox Church
Roman Catholic Church
Feast20 July[1]

Born about 770, of noble parentage, at the age of eighteen he entered the monastery of Fontenelle (also called St Wandrille after the name of its founder) in the diocese of Rouen. Saint Girowald, a relative of Ansegisus, was then Abbot of Fontanelle. Upon the recommendation of the abbot Girowald he was entrusted by the Emperor Charlemagne with the government and reform of two monasteries, St. Sixtus near Reims and St. Memmius (St. Menge) in the diocese of Châlons-sur-Marne, in which he was successful.[2]

In 817, Louis the Pious made him abbot of the famous Luxeuil Abbey,[2] founded by Saint Columbanus as early as 590. Finally, having also reformed Luxeuil, he was transferred in 823, after the death of Einhard, as abbot to Fontenelle, where he had begun his monastic life and which he reformed as successfully as the previous monasteries.[2] He was responsible for compiling a number of capitularies, a document of civil and ecclesiastical law,[3] and also commissioned the first abbey history, the Gesta abbatum Fontanellensium.[4]


  1. ^ "Saint Ansegisus". 21 July 2012.
  2. ^ a b c "CATHOLIC ENCYCLOPEDIA: St. Ansegisus".
  3. ^ "CATHOLIC ENCYCLOPEDIA: Besancon (Vesontio)".
  4. ^ Régis Rech, "Gesta abbatum Fontanellensium", in Encyclopedia of the Medieval Chronicle, edited by Graeme Dunphy and Cristian Bratu (Brill, 2016). Consulted online on 6 May 2019.

Primary sourcesEdit

  • Capitularies of Ansegisus (assembled 827), ed. G. Schmitz (1996). Die Kapitulariensammlung des Ansegis (Collectio capitularium Ansigisi). MGH Cap. NS 1. Hanover.