Where does “Mac Eacháin” come from?

Mac Eacháin (Irish) comes from Irish each, from Old Irish ech, from Primitive Irish ᚓᚊᚐᚄ, from Proto-Celtic ekʷos, from Proto-Indo-European h₁éḱwos, from Proto-Indo-European h₁oh₁ḱu- — swift.

Ancestry of “Mac Eacháin”, step by step

StepLanguageWordMeaning
1Irisheachhorse
2Old Irishechhorse
3Primitive Irishᚓᚊᚐᚄhorse
4Proto-Celticekʷoshorse
5Proto-Indo-Europeanh₁éḱwosstallion, horse
6Proto-Indo-Europeanh₁oh₁ḱu-swift

Words derived from “Mac Eacháin

Every word from Proto-Indo-European h₁oh₁ḱu-Every word from Proto-Indo-European h₁éḱwosEvery word from Proto-Celtic ekʷos