Great queen
A variant spelling of Rhiannon, a name from Welsh mythology. In the Mabinogion, Rhiannon is a figure of fertility and sovereignty, often associated with horses and birds.
Fewer than 5 girls were named Reannon in 2025.
A prominent figure in Welsh mythology known for her intelligence and patience · The Mabinogion
US births per 5-year period, 1990–present (SSA data).