Guilio is an Italian masculine given name, derived from Julius. In its original Latin form, 'Julius' was popular among Roman emperors and has been adopted by many cultures over time. The name means 'downy bearded,' possibly referring to a youthful appearance. It gained prominence in the Middle Ages through Saint Giulio, also known as Julian of Norwich.
"Guilio saw peaks in popularity in the late 1920s and again in 1941, with a total of 26 children bearing this name born across these years."