Where does “fournieri” come from?

fournieri (Latin) comes from French Fournier, from Latin furnārius, from Latin furnus, from Proto-Italic fornos, from Proto-Indo-European gʷʰr̥-nós, from Indo-European *gʷʰer-.

Ancestry of “fournieri”, step by step

Step	Language	Word	Meaning
1	French	Fournier	surname
2	Latin	furnārius	baker
3	Latin	furnus	oven; bakery
4	Proto-Italic	fornos	—
5	Proto-Indo-European	gʷʰr̥-nós	—
6	Indo-European	*gʷʰer-	—

Every word from Indo-European *gʷʰer- →Every word from Proto-Indo-European gʷʰr̥-nós →Every word from Proto-Italic fornos →