Guido Bonatti

In 1233 he is known as the winner of a dispute in Bologna with the friar Giovanni Schio from Vicenza, who maintained the non-scientific basis of astrology.

The event transpired as Bonati had predicted, and the count, who had taken with him the necessary materials to staunch his wound in case the prophecy came true, became a devout adherent of astrology.

[6] There is a tradition that Bonatti, towards the end of his life, took the friar's habit of the Franciscan Order.

However, the Franciscan Order, in the 1924 inaugural issue of its annual publication, Franciscan Studies, lays claim to Fra Guido Bonatti: The celebrated physicist, astronomer and astrologer, Guido Bonatti (d. 1296), a Friar Minor, drew scholars to his professional chair from all parts of Europe.

[7]According to the uncorroborated account of the Italian historian Ludovico Antonio Muratori, Bonatti was murdered by robbers whilst returning from a study trip to Paris and other Italian cities, being set upon in or near Casena, with his body left upon the road.