Etymology in the sources
Source-reportedA less common form of Kalju, from kalju (“rock”), also in the biblical sense as a translation of Peter.
Sources for this account (3)
- Wiktionary: KaljoCC-BY-SA-4.0 · retrieved 2026-10-15
- Polish Wiktionary: KaljoCC-BY-SA-4.0 · retrieved 2026-10-14
- Turkish Wiktionary: KaljoCC-BY-SA-4.0 · retrieved 2026-10-14

