Note 23 — THE ITALIAN VILLA (Concluded).
Reading edition
Ugolino; Dante, Inferno xxxiii. Guido Bonatti, the astrologer of Forli, Inferno xx., 118. The lady who perished at Coll' Alto, i.e. the higher part of Colle de Val d'Elsa, between Siena and Volterra—was Sapia; Purgatorio, xiii. 100-154.