According to the editor (on the basis of Liverani and previous edition by Schiaparelli), to be identified with a small locality "in Valdichiana, not far from Montepulciano", province of Siena. Kurze, on the contrary, sticking to the formula in the text ("Actum in Brioni, finibus Taurinate"), points out "Taurinate" is used in contemporary charters only for Turin, and locate "Brioni" in Val della Torre, 15 km. NW Turin. This identification was recently accepted by Chiarle.
Unidentified "fundus" in Tuscany (territory of Pisa?)