Bonamico m Medieval ItalianDerived from the Italian adjective
bono meaning "good" combined with the Italian noun
amico meaning "friend".
Sciarra m Medieval ItalianDerived from Sicilian
sciarra meaning "fight, brawl" as well as "quarrel, dispute", which is ultimately of Arabic origin.
Castruccio m Medieval ItalianDerived from medieval Italian
castro meaning "castle" combined with the masculine diminutive suffix
-uccio.
Ciolo m Medieval ItalianMeaning unknown. A known bearer of this name was the 13th-century Italian poet Ciolo de la Barba from the city of Pisa.