The Black Death killed all but four members of the abbey including Abbot Wyho and Goswin, a lay brother, who later became a priest and chronicled the history of the monastery.

After a period of decline in the sixteenth century, several German monks helped to restore and expand the abbey.

Abbot Mathias Lang (1615–40), from Weingarten Abbey, reformed it, and in 1634 Marienberg joined the Benedictine Congregation of Swabia.

Lang's successor, Jacob Grafinger (1640–53), enlarged the library, and made the younger members finish their education at schools of repute.

Abbot Johann Baptist Murr (1705–32) in 1724 founded a humanistic high school in Meran which is still administered by the monks of Marienberg.

Today the monks specialise in adult education: weekend courses and longer retreats are held at the abbey.