Probably derived from the old Celtic name Rigantona meaning "great queen". It is speculated that this was the name of an otherwise unattested Celtic goddess of fertility and the moon. The name Rhiannon appears later in Welsh legend in the Mabinogion, borne by the wife of Pwyll and the mother of Pryderi.
Origin of the name Rhiannon: Borrowed from the Welsh, Rhiannon is an ancient Celtic name of uncertain derivation. Some believe it to be derived from the Old Celtic Rigantona (great queen). The name, which is borne in Celtic Mythology by a goddess of fertility, was not used as a given name until the 20th century.
Origin of the name Rhiannon: Borrowed from the Welsh, Rhiannon is an ancient Celtic name of uncertain derivation. Some believe it to be derived from the Old Celtic Rigantona (great queen). The name, which is borne in Celtic Mythology by a goddess of fertility, was not used as a given name until the 20th century.
Meaning & History. Probably intended to mean "good spear" from Welsh rhon "spear" and da "good", but possibly influenced by the name of the Rhondda Valley in South Wales, which means "noisy".
