Etymology in the sources
Source-reportedModern variant of Kaia, from Katariina (“Catherine”). Compare also Finnish keiju (“fairy”) and Keijo.
Sources for this account (3)
- Wiktionary: KeiuCC-BY-SA-4.0 · retrieved 2026-10-15
- Polish Wiktionary: KeiuCC-BY-SA-4.0 · retrieved 2026-10-14
- Turkish Wiktionary: KeiuCC-BY-SA-4.0 · retrieved 2026-10-14

