Etymology in the sources
Source-reportedVariant of Aatu, thus a vernacular form of Aadolf. It has also been given to boys born on Midsummer/Christmas/New Year's Eve, from aatto (“eve”).
Sources for this account (5)
- Wiktionary: AattoCC-BY-SA-4.0 · retrieved 2026-10-15
- Greek Wiktionary: AattoCC-BY-SA-4.0 · retrieved 2026-10-15
- Polish Wiktionary: AattoCC-BY-SA-4.0 · retrieved 2026-10-14
- Russian Wiktionary: AattoCC-BY-SA-4.0 · retrieved 2026-10-14
- Chinese Wiktionary: AattoCC-BY-SA-4.0 · retrieved 2026-10-14
