Rosalio is a masculine given name of Spanish derivation, etymologically rooted in the Latin rosālia—originally denoting a festival of roses and later sanctified through devotion to Saint Rosalia—and morphologically adapted via the Romance-language suffix -io to signal masculine gender. Its usage in the United States reached its most pronounced peak in the early twentieth century, attaining a rank of 297 in 1911, before entering a phase of gradual attenuation and periodic fluctuation throughout the subsequent decades. In the past five years, Rosalio has maintained a low but stable presence, with twelve recorded births in 2023 (rank 917) and ten in 2024 (rank 914), underscoring its status as a distinctive yet enduring choice. Analytically, these data suggest that while Rosalio does not occupy the upper tiers of contemporary popularity, its sustained appearance in national registers reflects a continued appeal to parents seeking a name that conveys both historical resonance within Iberian and ecclesiastical traditions and singularity within an Anglo-American naming landscape.
| Rosalio José Castillo Lara - |
| Rosalío Solano - |