Where does “Piirainen” come from?

Piirainen (Finnish) comes from Swedish Birger, from Old Norse Birgir — helper.

Ancestry of “Piirainen”, step by step

Piirainen traces back through two separate lines of ancestry.

via Swedish Birger

StepLanguageWordMeaning
1SwedishBirgerfamous in the history of Sweden, e.g. Birger Jarl, a 13th century statesman
2Old NorseBirgirhelper

via Russian Спиридон

StepLanguageWordMeaning
1RussianСпиридон—
2Koine GreekΣπυρίδων—
Every word from Old Norse Birgir →Every word from Swedish Birger →