What is "getulius"

Saint Getulius (died 120 AD) is venerated together with Amantius (Amancius), Cerealus (Caerealis), and Primitivus as a Christian martyr and saint. They are considered to have died at Gabii. According to tradition, Getulius was the husband of Saint Symphorosa. Getulius is a name meaning “of the Gaetuli,” which was a tribe of North Africa.