Columbia subject headings:
Catholic Church--Italy--Friuli--History--Sources.
Friuli (Italy)--Church history--Sources.
Guglielmo, da Cividale.
Harvard subject headings:
Catholic Church--Italy--Cividale del Friuli--History--Sources.
Cividale del Friuli (Italy)--Church history--Sources.
Guglielmo, da Cividale.
Notaries--Italy--Cividale del Friuli--History--Sources.
Princeton subject headings:
Catholic Church--Italy--Friuli--History--Sources.
Friuli (Italy)--Church history--Sources.
Guglielmo, da Cividale, 13th-14th cent.