After attending school at Cassel he continued his studies at the University of Marburg, in which city he subsequently acted as deacon of the reformed church.
The reading of Bellarmine's works revealed to him the Catholic doctrine in its true light, and after careful study he and his family were received into the Church in 1630.
His funeral panegyric was delivered by Herwig Boning, representative of the Archbishop of Mainz in the district of Eichsfeld and parish priest of Duderstadt.
Boning included the panegyric in his edition of the works of Gudenus, which comprised a treatise on the Eucharist and two letters on the history of his conversion, one addressed to the Jesuits of Heiligenstadt, the other to his brother-in-law, Dr. Paul Stein: "Mensa Neophyti septem panibus instructa a cl.
Mauritio Gudeno, electorali Moguntino praefecto in Trefurt p.m. sive ejusdem de sua ad fidem romano-catholicam conversione et divina erga se providentia narratio" (Duderstadt, 1686).