Courageous or valiant
Rielly is a spelling variant of the Irish surname Reilly, which is derived from the Gaelic name Ó Raghallaigh. It traditionally signifies a descendant of Raghallach, a name thought to mean 'gregarious' or 'valiant'. While less common than Riley, this spelling retains the energetic and friendly spirit of its roots.
Fewer than 5 boys were named Rielly in 2025.
US births per 5-year period, 1990–present (SSA data).
American actor known for various television roles
