Community ID
Alternate Names
The convent of Sion; Seyen
Medieval Location
The convent was established at Oberwesseling.
Date Founded
1215 (circa); 1238, according to McDonnell.
Religious Order
Cistercian by 1248/9
Foundation Information

The convent was founded by Henry and Mechthildis, count and countess of Sayn. According to a necrologium drawn up by the nuns of Sion in the seventeenth or eighteenth century on the basis of older records, the convent was established in 1215. No foundation charter has survived. No early documents, dated prior to 1244 have survived either, so little about its early history is known. Sion first followed the Benedictine Rule according to Cistercian customs before being actually incorporated into the order. In 1248 or 1249 the convent was formally incorporated into the Cistercian order at the behest of Pope Innocent IV.

Population Counts

The convent was so popular that Pope Innocent IV limited the number of inhabitants to 50 in his confirmation bull (McDonnell, 94).

Social Characteristics

Of the thirty-one nuns identified at Sion, twenty-nine were patrician.

Manuscript Sources

Stadtarchiv Sion, Repertorien und Handschriften, no. 3, f. 1.

Secondary Sources

NULL; The Beguines and Beghards in Medieval Culture with Special Emphasis on the Belgian Scene, p. 94.
Opladen, Peter. "Die Geschichte des ehemaligen Klosters Seyen oder Sion zu Koln," Jahrbucher des Kolnischen Geschichtsvereins 27 (1953): 43.
Sukopp, Theodor. "Zur Grundung des Klosters Seyen oder Sion zu Koln," AHVN 158 (1956): 229-233.
Steffen, Stephan. "Das Grafenpaar Heinrich III. und Mechtilde von Sayn und die Cistercienser," Cistercienser-Chronik 23 (1911).

June Mecham
Contributors Notes

Sukopp beleived that Sion was a daughter-convent of the Cistercian house of Oberwesseling, but Steffen has refuted this contention.

Date Started