Gero (d. 965) was a follower of
Otto I from one of the most powerful families of eastern Saxony. In 937, Otto made Gero Margrave of the
Eastern March. Gero, who owned a castle at Gernrode, decided to found a
collegiate church and female (lay) convent (
Stift) here, in cooperation with his son Siegfried. Construction on the crypt, the eastern
apse and the convent started in 959. In 961, the foundation was awarded royal protection. In 963,
Pope John XII issued a privilege, which removed the convent from the influence of the
Bishop of Halberstadt. Siegfried had died heirless in 959. After Siegfried's death, his widow
Hathui had become abbess of the convent. Gero returned from a trip to Rome with a valuable
relic of
Saint Cyriacus and the church was dedicated to this saint in 963. In 965, Gero died and was buried in front of the already finished eastern choir. A hiatus in construction followed Gero's death and is seen as the likely source of the shift in the church's axis (see map). Hathui ruled the convent for 55 years until her death in 1014. In 999, Emperor
Otto III granted the convent Imperial status and in 1004, Empress
Kunigunde, wife of Emperor
Heinrich II visited the convent. The first stage of construction ended in 1014. That same year, on Hathui's death,
Adelheid, daughter of Emperor
Otto II succeeded her as abbess. Adelheid held that position until 1044. The vaults of the transept were added in the
Gothic period. The last Catholic abbess was Scholastika von Anhalt Dessau (1469–1504). Her successor, Elisabeth von Weida (1504–1576) introduced
Reformation in 1521. In 1525, Elisabeth managed to prevent damage to the convent during the
German Peasants' War. With its introduction into the
Landeskirche, the convent lost its independence and fell under the influence of the
local princes. Abbess Anna von Plauen (1532–1549) founded the first school and supported the convent's role in providing medical care. From 1533, the collegiate church was shared with the parish. When Gernrode was awarded the status of town in 1539, the abbess donated a coat of arms. The last
Stiftsdame (and by default abbess),
Sophie Elisabeth, left the abbey in 1614. In 1619, the abbey became a secular domain of the prince. Medieval works of art were removed, the buildings fell into disrepair and parts of the church were used for agriculture. In 1669,
Friedrich von Harzgerode purchased the town and the church. Renovations were carried out in 1754–1756. In 1806, with the end of the
Holy Roman Empire, the convent finally lost its Imperial status and immunity and was subsumed by the
Duchy of Anhalt-Bernburg. Over the following decades, the convent fell into ruin, the inventory was auctioned off until the purchase, in 1832, by
Amtmann Henneberg. He secularized the church and converted the convent into a farming estate. In the late 1830s, interest in the church and convent resurfaced, with art historian
Franz Theodor Kugler publishing a description in 1838 and calling for its renovation in 1839. At the request of
Duke Alexander Carl von Anhalt-Bernburg, architect then restored the church in 1859–1873. Further work followed in 1907–1910, when the two towers of the west works were first removed and then rebuilt with strengthened foundations. Between 1960 and 1984, communist
East Germany had the court and convent buildings restored. In 1984–1987, the church interior was renovated. Post
reunification, in 1992, the roof was sheathed in copper. More work was done in 2003–2004 on the western apse and the Holy Sepulchre. ==Description==