Normal" is an unusual yet straightforward name of Latin origin, meaning "ordinary." It was predominantly used as an adjective rather than a given name until the mid-20th century when it started appearing on birth certificates in some English-speaking countries. Today, while still uncommon, it's not unheard of to meet someone named Normal.
"Between 1922 and 1944, the name Normal was given to a total of 45 newborns across eight years, with peaks in popularity occurring around the late 1930s."