The name of the architect who 'began the work and thus fixed the design of the whole is not certainly known, but it must have been a man of an earlier generation than that of Filippo Calendario, who is often stated to have been the chief architect of the older portion.
Calendario was an accomplice in the conspiracy of Marino Faliero, and was executed together with the doge in 1355.
He published separately: - Istoria Universale (Roma, 1697), only one volume of which appeared; De Calendario et Cyclo Caesaris (1703); Hesperi et Phosphori nova Phaenomena (1729), in which he asserted Venus to rotate in 243 days; and (posthumously) Astronomicae et Geographicae Observationes Selectae (1737) and Opuscula Varia (1754).
Tisri calcolo della Pasqua, e correzione di quello di Gauss, con critiche o;servazioni sit quanto ha scrittc del calendario it Delambri, di Lodovico Ciccolini (Rome, 1817); E.
(Turin, 1846); Calendario Reale, an annual publication issued in Rome.