Toynbee "Valdigrieve"
the valley of the Greve, small river of Tuscany, which rises about 20 miles S. of Florence, and flows N., joining the Ema close to Galluzzo, about 3 miles from the Porta Romana of Florence, mentioned by Cacciaguida (in the Heaven of Mars) in connexion with the Buondelmonti, the destruction of whose castle of Montebuono in the Valdigrieve, in the course of the expansion of the city of Florence, was the cause of their taking up their residence in the city itself, [Par. xvi. 66]. [Buondelmonti.]

©Oxford University Press 1968. From A Dictionary of Proper Names and Notable Matters in the Works of Dante by Paget Toynbee (1968) by permission of Oxford University Press