c. 1500-1585, active from 1529 in Spain, clock maker; engineer, mathematician, of Cremona, Italian? Torriano, Juanelo 1500 - 1585
1529-1604, burgomaster of Leiden during the Spanish War and the pestilence of 1553, Dutch Werfius, Petrus Adriani 1529 - 1604
ca. 1318-1389, mathematician; philosopher; astronomer; physician, Italian Dondi dall'Orologio, Giovanni 1318 - 1389