Hersfeld was founded by
Saint Sturm, a disciple of Saint
Boniface, before 744. Because its location rendered it vulnerable to attacks from the
Saxons, however, he transferred it to
Fulda. Some years later, in or about 769 after the defeat of the Saxons by the
Franks,
Lullus,
archbishop of Mainz, re-founded the monastery at Hersfeld.
Charlemagne (who had recently succeeded to the Frankish royal crown) and other benefactors provided endowments, and in 775 gave it the status of a (); i.e., territorially independent
prince-abbacy within the empire.
Pope Stephen III granted it exemption from episcopal jurisdiction. It soon possessed 1050
hides of land and a community of 150 monks. A valuable library was collected, the annals of the monastery were regularly kept, and it became well known as a seat of piety and learning. Towards the close of the 10th century, Hersfeld suffered from the general decline of the age, and monastic discipline became relaxed. In 1005, the observance was reformed by
Saint Gotthard (afterwards
Bishop of Hildesheim), and members of the community were sent out to other houses of the order to carry out in them the work of religious revival. During the
Investiture Controversy, Hersfeld took the side of the imperial cause against the papacy.
Emperor Henry IV himself visited it quite often, sometimes accompanied by his wife; and his son and successor son
Conrad of Italy was born and baptized within the precincts of the abbey. In the last decade of the 11th century the abbey seems to have been fully restored to papal favour, and it continued to prosper for a long subsequent period. The town of Hersfeld, now
Bad Hersfeld, grew up outside the abbey, and flourished, to the extent that it found itself strong enough to assert its independence, and in 1371 formally placed itself under the protection of the
Landgraves of Hesse. As time went on the state of the monastery again deteriorated, and in 1513 it had reached such a low point that abbot Volpert Riedesel resigned his office into the hands of
Pope Leo X, and the
abbot of Fulda was authorized by the
Emperor Maximilian to incorporate the house into his own abbey. According to a contemporary account, the library was in a state of ruin and decay, many precious volumes had altogether disappeared, and manuscripts containing the archives and records of the house were used in the kennels as litter for the dogs. ==Reformation==