Pure or dark-haired
Keryn is a modern derivative likely blending the Cornish name Keren with the Irish Ciara. It is often associated with the Greek 'katharos' meaning pure, or the Gaelic 'ciar' meaning dark.
Fewer than 5 girls were named Keryn in 2025.
US births per 5-year period, 1990–present (SSA data).