Early in 714 Pepin of Herstal and his wife Plectrude sent Saint Willibrord letters of conveyance and protection for the monastery, permitting free election of abbots. The Benedictine foundation served as a refuge for the missionaries working in Friesia and the Netherlands.
The Lotharingian King Zwentibold, a benefactor of the abbey and either the father or the brother of the abbesses Benedicta and Cecilia, was buried (according to a later tradition) in Susteren Abbey in about 900.
Also buried there are Saint Wastrada, who died in the mid-8th century, and Saint Gregory of Utrecht (d. about 775/777), a companion of Saint Boniface in his missions to Friesia, and later abbot of the Martinsstift in Utrecht.
St. Amelberga's BasilicaEdit
The abbey church, one of the major examples of Romanesque architecture in the Netherlands, although marred by a poor restoration in 1885-1890, was built in the 11th century. It was clearly influenced by the Ottonian minster church of Essen Abbey. It was dedicated to Amelberga in 1886, after authentication of the relics kept here. On 6 September 2007 the church was declared a basilica minor.
- Habets, J.J., 1869: Bijdragen tot de geschiedenis van de voormalige stad Susteren en van de adellijke vrouwenabdij Sint-Salvator aldaar, Publications de la Société Historique et Archéologique dans le Limbourg 6 (1869), 441-567.
- Koldeweij, A.M., and van Vlijmen, P.M.L. (eds.), 1985: Schatkamers uit het Zuiden. Tentoonstellingscatalogus Rijksmuseum het Catharijneconvent (pp. 83-92, 97-104, 165-167). Utrecht
- Roozen, N., 1960: Uit de schatkamer van de oude abdijkerk van Susteren. Harreveld
- Sangers, W., and Simonis, A.H., 1958: De kerk van Susteren. Karolingische familieabdij. Adellijk vrouwenstift. Parochie. Susteren
- Susteren Abbey Church (private interest site)
- Digitaal Vrouwenlexicon van Nederland: Life of Saint Amelberga of Susteren (Dutch)