This bloody feast is described in Leonine verse in the Pantheon of Godfrey of Viterbo (Script. Ital. tom. vii. p. 436, 437), who flourished towards the end of the xiith century (Fabricius Bibliot. Latin. Med. et Infimi Aevi, tom. iii. p. 69, edit. Mansi); but his evidence, which imposed on Sigonius, is reasonably suspected by Muratori (Annali, tom. Viii. P. 177).