Namesakes

Nobel Prize Winners: 1 physics
(physics) Guglielmo Marconi   1909  
Notable Athletes: 1 boxing, 1 rugby
(boxing) Willie Pep (a.k.a. Guglielmo)   1922-2006  
(rugby) Guglielmo Palazzani   1991-  
Notable Scientists and Inventors: 1 inventor
Guglielmo Marconi   1874-1937  
Saints: 1 saint
Saint William of Vercelli (a.k.a. Guglielmo)   1085-1142