Diona is of Latin origin and means 'devoted to Diana', the Roman goddess of the hunt, forests, and wild animals. It's a unique and melodic name that has gained some popularity in recent years.
"Diona seems to have been quite popular as a baby name during the mid-20th century, with peaks in the late 60s and early 70s. However, its popularity declined significantly from the late 70s onwards, with fewer than 30 births recorded per year since 1984."