Old river or wise river
Shannin is a variant of Shannon, derived from the name of the longest river in Ireland. It stems from the Old Irish 'Sionainn', which is associated with the goddess Sionann and the concept of ancient wisdom.
Fewer than 5 girls were named Shannin in 2025.
US births per 5-year period, 1990–present (SSA data).
American actress and musician known for A Knight's Tale
