The Chronicon Tarvisianum (in Muratori, Script. Rerum Italicarum tom. xix. p. 800), and the Annales Estenses (tom. xviii. p. 974). The two authors, Andrea de Redusiis de Quero, and James de Delayto, were both contemporaries, and both chancellors, the one of Trevigi, the other of Ferrara. The evidence of the former is the most positive.