Yore

wiktionary

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From Middle English yore, yoare, yare, ȝore, ȝare, ȝeare, from Old English ġeāra(literally “of years”), of unclear origin but probably from Proto-Germanic *jērǫ̂, the genitive plural of Proto-Germanic *jērą(“year”). More at year.

etymonline

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yore (adv.)

Old English geara "of yore, formerly, in former times," literally "of years," originally adverbial genitive plural of gear (see year), and used without of. As a noun from mid-14c.