Where does “herce” come from?

herce (Middle English) comes from Old French herce, from Latin herpicem, from Latin hirpex, from Latin hirpus, from Proto-Indo-European ǵʰers- — stiff; surprised.

Ancestry of “herce”, step by step

Step	Language	Word	Meaning
1	Old French	herce	—
2	Latin	herpicem	—
3	Latin	hirpex	harrow
4	Latin	hirpus	wolf
5	Proto-Indo-European	ǵʰers-	stiff; surprised

Every word from Proto-Indo-European ǵʰers- →Every word from Latin hirpus →Every word from Latin hirpex →