Sunderolt (or Sunderhold) (died 25 June 891) was the

Archbishop of Mainz The Elector of Mainz was one of the seven Prince-electors of the Holy Roman Empire. As both the Archbishop of Mainz and the ruling prince of the Electorate of Mainz, the Elector of Mainz held a powerful position during the Middle Ages. The Archb ...

from 889 until his death. Sunderolt had not held the primatial see of Germany for long when a

Viking Vikings were seafaring people originally from Scandinavia (present-day Denmark, Norway, and Sweden), who from the late 8th to the late 11th centuries raided, pirated, traded, and settled throughout parts of Europe.Roesdahl, pp. 9� ...

invasion of

West Francia In medieval historiography, West Francia (Medieval Latin: ) or the Kingdom of the West Franks () constitutes the initial stage of the Kingdom of France and extends from the year 843, from the Treaty of Verdun, to 987, the beginning of the Capet ...

attracted his attention. He led an army of

Rhenish The Rhineland ( ; ; ; ) is a loosely defined area of Western Germany along the Rhine, chiefly its middle section. It is the main industrial heartland of Germany because of its many factories, and it has historic ties to the Holy Roman Empir ...

and

Lotharingia Lotharingia was a historical region and an early medieval polity that existed during the late Carolingian and early Ottonian era, from the middle of the 9th to the middle of the 10th century. It was established in 855 by the Treaty of Prüm, a ...

n troops against the Vikings. He was killed in the ensuing battle, for which the ''

Annales Fuldenses The ''Annales Fuldenses'' or ''Annals of Fulda'' are East Francia, East Frankish chronicles that cover independently the period from the last years of Louis the Pious (died 840) to shortly after the end of effective Carolingian rule in East Fran ...

'' castigated his rashness. He was succeeded by

Hatto I Hatto I (c. 850 – 15 May 913) was Archbishop of Mainz (Mayence) from 891 until his death. Family and early life Hatto belonged to a Swabian family, and was probably educated at the monastery of Reichenau, of which he became abbot in 888. He was ...

Reichenau Reichenau may refer to: *Reichenau Island, a German island in Lake Constance **Reichenau Abbey, a former Benedictine monastery on the island **Reichenau, Baden-Württemberg, a municipality that encompasses the namesake island and five separate area ...

Sources

*
The Annals of Fulda
'. (Manchester Medieval series, Ninth-Century Histories, Volume II.)

Reuter, Timothy Timothy Alan Reuter (25 January 1947 – 14 October 2002), grandson of the former mayor of Berlin Ernst Reuter, was a German-British historian who specialized in the study of medieval Germany, particularly the social, military and ecclesiastical ...

(trans.) Manchester: Manchester University Press, 1992. 891 deaths Archbishops of Mainz 9th-century archbishops Military personnel killed in action Year of birth unknown {{Germany-RC-archbishop-stub