Frederick (died October 954) 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 937, following the late

Hildebert Hildebert is a masculine given name of Germanic origin. It may refer to: * Hildebert (bishop of Cambrai) () * Hildebert, Count of Ivois ( 882) * (died 937) * (died 1006) *, abbot () *, abbot () * Hildebert of Lavardin (died 1133), bishop of Le Man ...

, until his death. He was a son of

Reginar, Duke of Lorraine Reginar Longneck or Reginar I ( 850–915), or ''Ragenerus Longicollus'', was a leading nobleman in the kingdom of Lotharingia, variously described in contemporary sources with the titles of count, margrave, missus dominicus and duke. He stands ...

. Immediately, Frederick acted as an opponent of

Otto the Great Otto I (23 November 912 – 7 May 973), known as Otto the Great ( ) or Otto of Saxony ( ), was East Frankish ( German) king from 936 and Holy Roman Emperor from 962 until his death in 973. He was the eldest son of Henry the Fowler and Matilda ...

, one of the most consistent opponents he faced. In 939, he joined the rebellion of Eberhard III of Franconia, Gilbert of Lorraine, and

Henry I of Bavaria Henry I (919/921 – 1 November 955), a member of the German royal Ottonian dynasty, was Duke of Bavaria from 948 until his death. Life He was the second son of the German king Henry the Fowler and his wife Matilda of Ringelheim. After the dea ...

. He was imprisoned in

Hammelburg Hammelburg is a town in Bavaria, Germany. It sits in the district of Bad Kissingen, in Lower Franconia. It lies on the river Franconian Saale, 25 km west of Schweinfurt. Hammelburg is the oldest winegrowing town (''Weinstadt'') in Francon ...

for a while. He plotted with Henry to assassinate Otto in Easter 941 in

Quedlinburg Quedlinburg () is a town situated just north of the Harz mountains, in the Harz (district), district of Harz in the west of Saxony-Anhalt, Germany. As an influential and prosperous trading centre during the early Middle Ages, Quedlinburg becam ...

, but they were discovered and put in captivity in

Ingelheim Ingelheim (), officially Ingelheim am Rhein (), is a town in the Mainz-Bingen Districts of Germany, district in the Rhineland-Palatinate state of Germany. The town sprawls along the Rhine's left bank. It has been Mainz-Bingen's district seat sin ...

, being released and pardoned only after doing penance at Christmas of that year. Frederick refused to accompany Otto to

Italy Italy, officially the Italian Republic, is a country in Southern Europe, Southern and Western Europe, Western Europe. It consists of Italian Peninsula, a peninsula that extends into the Mediterranean Sea, with the Alps on its northern land b ...

in 951. He participated in another rebellion with

Liudolf, Duke of Swabia Liudolf ( – 6 September 957), a member of the Ottonian dynasty, was duke of Swabia from 950 until 954. His rebellion in 953/54 led to a major crisis in East Francia. Rise Liudolf was the only son of the Saxon duke Otto the Great, son and hei ...

, and

Conrad, Duke of Lorraine Conrad ( – 10 August 955), called the Red (), was Duke of Lorraine from 944 until 953. He became the progenitor of the Imperial Salian dynasty. Life He was the son of Werner V (died about 935), a Franconian count in the Nahegau, Speyergau, a ...

, luring the king to Mainz in 953. Abandoned by the Lorrainers and without Henry's support this time, the rebels were easily crushed and punished. Frederick tried to distance himself from the fighting, but died before anything could come to him.

Sources

* * {{DEFAULTSORT:Frederick 954 deaths Archbishops of Mainz 10th-century archbishops Year of birth unknown