Slender, bright-headed, or descendant of Ceallach
Kellyn is a modern American elaboration of the Irish name Kelly. It likely derives from the Gaelic name Ceallach, which has various interpretations including 'warrior', 'bright-headed', or 'frequenting churches'. The '-lyn' suffix is a popular contemporary addition that softens the traditional surname-name.
About 8 girls were named Kellyn in 2025.
US births per 5-year period, 1990–present (SSA data).
Professional soccer player for the US Men's National Team
American long-distance runner
