The name Maggio is a boy's name of Italian origin meaning "May". Maggio and is often added to lists like Italian Word Names and discussed in our forums with posts like "Themed Families..".
From the experts:
Interesting ethnic last-name-first possibility, evoking the springtime month; also a sports-hero connection to baseball great Joe DiMaggio. Could make an interesting way to honor Grandma May or Mary with a boy's name.