In the records of the monastery his main job was recorded as collecting the monastery's rents, but from the 1450s he is also mentioned as the creator of a series of world maps.
Kloostri dokumentides on tema peamise tööna kirjas küll kloostri rentide kogumine, kuid alates 1450. aastatest on teda mainitud kui sarja maailmakaartide loojat.