Some historians – e.g. Samu Borovszky – argued that Maurus was of Venetian origin too, and accompanied Gerard from Venice to the Kingdom of Hungary around 1020.
However, Gerard's legend says that while Stephen I of Hungary convinced the monk not to continue his pilgrimage to the Holy Land, he sent his traveling companions secretly on their way.
When its teacher, cantor Walther asked the bishop for another magister to help him in his work due to the growing number of students, Gerard sent Maurus to Székesfehérvár in order to visit the schools located there.
Maurus, who survived the anti-Christian massacres, succeeded him as bishop of Csanád already in that year, when the newly crowned Andrew I of Hungary stabilized the kingdom and crushed the rebellion.
[1] Under Maurus' guidance, the Benedictine monks transferred Gerard's remains after seven years, i.e. [24 February] 1053, to the Mary Church in Csanád.