Gualterus Arsenius Unknown - 1580
Nephew of Gemma Frisius, established an mathematical instrument workshop at Louvain, in the Low Countries (fl. 1555-75); often signed work 'Gualterus Arsenius nepos Gemmae Frisii'
Nephew of Gemma Frisius, established an mathematical instrument workshop at Louvain, in the Low Countries (fl. 1555-75); often signed work 'Gualterus Arsenius nepos Gemmae Frisii'
