Where does “Tervonen” come from?

Tervonen (Finnish) comes from Finnish terva, from Proto-Finnic terva, from Proto-Indo-European dérw-o-m, from Proto-Indo-European dóru, from Proto-Indo-European drew- — hard, firm, strong, solid; hard, fast; tree.

Ancestry of “Tervonen”, step by step

Step	Language	Word	Meaning
1	Finnish	terva	tar
2	Proto-Finnic	terva	tar
3	Proto-Indo-European	dérw-o-m	—
4	Proto-Indo-European	dóru	tree
5	Proto-Indo-European	drew-	hard, firm, strong, solid; hard, fast; tree

Words derived from “Tervonen”

Tervo
Tervola
tervolalainen

Every word from Proto-Indo-European drew- →Every word from Proto-Indo-European dóru →Every word from Proto-Indo-European dérw-o-m →