Rhiannon is a female name of Welsh origin, derived from the Celtic Rigantona, meaning "great queen." It combines a root meaning "queen" (rīganī) with a divine or augmentative -on suffix. The name is often linked to a speculated Celtic goddess, possibly associated with fertility and horses, similar to the Gaulish deity Epona.Mythological BackgroundRhiannon is a prominent figure in Welsh mythology, appearing in the Mabinogion. She is described as a beautiful, intelligent woman who rides a white horse. In the First Branch, she is betrothed to Gwawl against her will but cunningly breaks the engagement to marry Pwyll, prince of Dyfed. Their son is Pryderi. Rhiannon is noted for her strength, political skill, and generosity, and has been called "one of the great female personalities in world literature."Popularity and Modern UseAs an English name, Rhiannon gained popularity after the 1975 Fleetwood Mac song "Rhiannon," particularly in the United Kingdom and Australia. The name remains most common in Wales and among English-speaking communities.Related NamesVariants include Rhianon, Reannon, and Riannon. The Celtic mythological form is Rigantona.Meaning: 'great queen'Origin: Welsh and CelticType: first name (feminine)Usage: English, Welsh