Arbeo
Bishop of Freising (764-783), d. 4.5.783; name often Latinised as 'Heres'
Atto
Abbot of Scharnitz-Schlehdorf, and from 783 bishop of Freising.
Occurs as scribe in MON 1, and according to that charter to be identified with namesake in FRE 28, 34, 45, 75 & 77.