Where does “Kumpulainen” come from?

Kumpulainen (Finnish) comes from Finnish -lainen, from Proto-Finnic -lainen, from Proto-Finnic -la — locative suffix.

Ancestry of “Kumpulainen”, step by step

StepLanguageWordMeaning
1Finnish-lainenCombined with a place name, forms the noun for...
2Proto-Finnic-lainenForms adjectives relating to a place
3Proto-Finnic-lalocative suffix
Every word from Proto-Finnic -la →Every word from Finnish -lainen →Every word from Proto-Finnic -lainen →
Kumpulainen — Etymology, Origin & Word History | Etymology Explorer