Where does “fīrōn” come from?

fīrōn (Old High German) comes from Latin ferior, from Latin fēriae.

Ancestry of “fīrōn”, step by step

Step	Language	Word	Meaning
1	Latin	ferior	to rest from work, to keep holiday; first-person...
2	Latin	fēriae	—

fīrōn — Etymology, Origin & Word History | Etymology Explorer