Words that come from Old Irish é-

20 words across 3 languages descend from Old Irish é- — including éa-, éaglórach, éadrom, écsamail, bithéagsúlacht, éagsúlacht, éagsúil, éagsúlach.

See the etymology of é- itself →

Irish (17)

Old Irish (2)

Scottish Gaelic (1)