O. Scalvanti, Il Mons Pietatis di Perugia con qualche notizia di quello di Gubbio (Perugia, 1892).
F. Ranghiasci, De' palazzi municipali ecc. di Gubbio, in Arch. St. It., ser. VI., vol. VI., p. ii.
A. Pellegrini, Gubbio sotto i conti e Duchi d'Urbino, in Bollettino per l'Umbria, vol. XI., pp. 135-246 e 483-535, e vol. XII., pp. 1-50.
[19] It was first given to Oddantonio, in 1443, but lapsed a few months later by his death.
[20] The Carpegna arms were azure, three bends argent. The Montefeltri of Urbino had their bends or, impaled with the eagle as feudatories of the empire.
[*21] This was the detection of a plot against Frederick. Cf. Ugolini, Storia dei Conti e Duchi d'Urbino (Firenze, 1859), vol. I., p. 12.
[*22] He had been excommunicated for the third time in 1288 for defending the Pisani. He was finally reconciled to the Church, October 1, 1294. Cf. Ugolini, op. cit., vol. I., p. 81 et seq. Muratori (Annali ad ann. 1295) says: "Guido conte di Montefeltro rimesso in grazia del papa, venne in quest'anno a Forlì...."
[23] Dublin Review, vol. XI., 1841, p. 505. Brit. and Foreign Review, vol. XIII., 1842, p. 415.
[*24] The authorities for the life of Count Guido il Vecchio of Montefeltro are the Cronaca Riminese and the Cronaca Estense, in Muratori, R.I.S. Cf. also Villani, Cronaca, especially lib. VII., caps. 81, 128, and Rodolfo Honig, Conte Guido di Montefeltro (Bologna, 1901). Cf. also Rizzoli, I Sigilli nel Museo Bottacin di Padova (Padova, 1903), p. 51, tav. 6, where a seal of Guido is described and illustrated.
[25] Yet the denial of this imputation by Muzio and Baldi may be ascribed rather to sycophancy than to historic research, especially as the latter, in his Encomio della Patria, has gravely maintained that Guido was placed in the Inferno, not for his misdeeds, but as the only modern warrior worthy to be the associate of Ulysses!