Sheyli is a feminine forename situated at the intersection of Hispanic and Anglo-American onomastics, with phonetic articulation as /ʃeiˈli/ in Spanish and /ʃeɪli/ in English. The name’s origin derives from an inventive orthographic adaptation that echoes the Irish Gaelic Síle (Latin Cecilia) while conforming to Spanish phonotactics, repurposed as a modern appellative devoid of a singular inherited denotation. Quantitative evaluation of U.S. Social Security Administration records from 2002 through 2024 reveals a sustained low-frequency adoption—peaking at twenty-three occurrences in 2023 (rank 935) and oscillating within the 897–979 interval—thereby classifying it as a distinctive yet accessible choice. Its disyllabic structure, balanced consonant-vowel sequencing and inherent bilingual compatibility underpin its alignment with contemporary naming paradigms that favor succinct, culturally nuanced identifiers.