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Home > Otto I, Holy Roman Emperor


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2 Campaigns in Italy and eastern Europe

Meanwhile, Italy had fallen into political chaos. On the death ( 950), possibly by poisoning, of Lothair of Arles , the Italian throne was inherited by a woman, Adelaide of Italy, the respective daughter, daughter-in-law, and widow of the last three kings of Italy. A local noble, Berengar of Ivrea , declared himself king of Italy, abducted Adelaide, and tried to legitimize his reign by forcing Adelaide to marry his son Adalbert. However, Adelaide escaped to Canossa and requested German intervention. Ludolf and Henry independently invaded northern Italy to take advantage of the sitution, but in 951 Otto frustrated his son's and his brother's ambitions by invading Italy himself, forcing Berengar to swear fealty, and then, having been widowed since 946, marrying Adelaide.

This marriage triggered another revolt. When Adelaide bore a son, Ludolf feared for his position as Otto's heir, and in 953 he rebelled in league with Conrad the Red and the Archbishop of Mainz. While Otto was initially successful in reasserting his authority in Lorraine, he was captured while attacking Mainz, and by the next year, the rebellion had spread throughout the kingdom. However, Conrad and Ludolf erred by allying themselves with the Magyars. Extensive Magyar raids in southern Germany in 954 compelled the German nobles to reunite, and at the Diet of Auerstadt , Conrad and Ludolf were stripped of their titles and Otto's authority reestablished. In 955, Otto cemented his authority by routing Magyar forces at the Battle of Lechfeld.

3 Imperial title

Meanwhile, Italy was again in political turmoil, and when Berengar occupied the northern Papal States, Pope John XII asked Otto for assistance. Otto returned to Italy and on February 2, 962, the pope crowned him emperor. Ten days later, the pope and emperor ratified the Diploma Ottonianum , in which the emperor became the guarantor of the independence of the papal states. After Otto left Rome and reconquered the Papal States from Berengar, however, John became fearful of the emperor's power and sent envoys to the Magyars and the Byzantine Empire to form a league against Otto. In November of 963, Otto returned to Rome and convened a synod of bishops that deposed John and crowned Leo VIII, at that time a layman, as pope. When the emperor left Rome, however, civil war broke out in the city between those who supported the emperor and those who supported John. John returned to power amidst great bloodshed and excommunicated those who had deposed him, forcing Otto to return to Rome a third time in July of 964 to depose Pope Benedict V (John having died two months earlier). On this occasion, Otto extracted from the citizens of Rome a promise not to elect a pope without imperial approval.

Otto unsuccessfully campaigned in southern Italy on several occasions from 966-972, although in 972, the Byzantine emperor John I Tzimisces recognized Otto's imperial title and agreed to a marriage between Otto's son and heir Otto II and his niece Theophano.

His younger brother was Archbishop Bruno I of Cologne.

After his death in 973 he was buried next to his first wife Editha of Wessex in the Cathedral of Magdeburg


Preceded by:
Henry I
King of Germany
Also Holy Roman Emperor
Succeeded by:
Otto II






German Kings Holy Roman emperors



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