[1] Gerard founded the abbey on his own land, with the blessing of Stephen of Liège (died 920), and obtained a relic of St Eugenius from the abbot of Saint-Denis.

In 992 Otto III visited the abbey together with Notker of Liège and confirmed its independence and privileges.

[3] In 1566 the revenues of the abbacy were assigned to the recently founded Diocese of Namur by a bull of Pope Pius IV.

[4] Just which revenues were due to the bishop remained subject to dispute, petitions and sometimes litigation until the abbey was suppressed in 1796.

[5] The buildings of the former monastery were acquired by the municipality of Mettet in 1974,[6] and were listed as built heritage in 1995.