Guglielmo Marconi | Guglielmo Oberdan | Guglielmo Cavallo | Guglielmo Vaccaro | Guglielmo Tocco | Guglielmo Ratcliff | Guglielmo Plüschow | Guglielmo Picchi | Guglielmo Massaia | Guglielmo Libri Carucci dalla Sommaja | Guglielmo Achille Cavellini |
More serious roles he recorded include the King of Egypt in two recordings of Aida with Renata Tebaldi, Mathieu in Andrea Chénier, also with Tebaldi, two recordings of the Bonze in Madama Butterfly with both Anna Moffo and Leontyne Price, and the Gessler in Rossini's Guglielmo Tell (William Tell) with Giuseppe Taddei and Rosanna Carteri.