Where does “Kauppinen” come from?

Kauppinen (Finnish) comes from Finnish Kauppi, from Finnish kauppa, from Proto-Germanic kaupaz, from Latin caupo, from Proto-Indo-European kaup-.

Ancestry of “Kauppinen”, step by step

Step	Language	Word	Meaning
1	Finnish	Kauppi	Any of a number of small places in Finland
2	Finnish	kauppa	commerce, business, trade; traffic; buying and...
3	Proto-Germanic	kaupaz	purchase
4	Latin	caupo	Tradesman; Innkeeper, shopkeeper
5	Proto-Indo-European	kaup-	—