Hitto of Freising

During his time in office, the monk and notary, Kozroh (or Cozroh), compiled the first Freising Book of Traditions (Freisinger Traditionsbuch).

The work consists of three parts; the first was a cartulary of legal documents during the time of previous bishops (730-811); the second was a cartulary of legal conveyances and litigations under Hitto (811-835); the third part was a record of the transactions under Hitto's successor, Erchanbert, up to the year 848.

[1] Under Hitto, the Freising scriptorium reached a special high point;[2] for example, about 40 codices were written.

[3] While compiling the cartularies, Cozroh drew attention to Hitto's passion in reforming sacred studies and liturgy.

[4] According to an old tradition, during his pilgrimage to Rome in 834 Hitto was given the relics of Saint Justin by Pope Gregory IV, and brought them to Freising.