More info about the name "Reanna"
Reanna is a variant of the name Rhiannon. Rhiannon originates in Welsh language and means "eminent, great queen or goddess". In Welsh mythology, Rhiannon was the wife of Pwyll and is associated with Rigantona, the goddess of fertility, and Epona, the goddess of horses. The given name was popularized by the 1976 song of the same name by Fleetwood Mac.