Rhiannon, pronounced ree-AN-non, is of Welsh origin and means "great queen" or "queen of the sea." It is derived from the old Celtic word "rian," meaning "king," or "queen," combined with the suffix "-onn." This name has gained popularity in recent years, likely due to its unique sound and regal connotations. It's often associated with Welsh history and culture, particularly as it is the name of a prominent figure in the ancient Welsh tale "The Fourth Branch" of the Mabinogion. In this story, Rhiannon is known for her wisdom, courage, and beauty, and is often depicted riding a horse. The name has also been used by some notable individuals throughout history, such as the Welsh singer Rhiannon Giddens, adding to its recognizability.
"Rhiannon was quite popular in its first year of being recorded, with five newborns sharing the name in 1982."