- The novel follows, the chronicle of Pietro Gerardo chosen because it is one of the most controversial on the topic.

Cfr. Vita di Ezzelino terzo da Romano, dall'origine al fine di sua famiglia. Sotto la cui tirannide mancarono di morte violenta più di dodeci millia Padouani. Distinta in nove libri, ne i quali si ha la cognitione delle guerre della Marca Trivisana, & di molte altre cose, da gli anni M.C. fin'a M.CCLXII. Con un breue retratto della statura, & de' costumi d'Ezzelino, raccolto da diverse antiche historie by Pietro Gerardo Padouano suo contemporaneo, Venice 1550 ca.

- The misterious inscription of chapter XIII is still existing. Nowadays it is kept in a paduan mansion that was once owned by the San Bonifacio family and it is always a mistery.

- Ezzelino´s III horoscope is to one that was done by the astrologist of his court.

- Erofile: it is the name of the Eritrea Sybill.

- Carmenta: it is the name of the Camena that better rapresents the prophetic faculty. She was later assimilated to one of the Sybills.

- Lenore: it is the name of the woman in the poetry The Raven by Edgar Allan Poe. The raven is considered as a psicopompus animal thus able to put in contact the world of the livings with the one of the deaths.