Where does “Ek” come from?

Ek (English) comes from Swedish Ek, from Old Norse eik, from Proto-Germanic aiks, from Proto-Indo-European h₂eyǵ- — goat; oak.

Ancestry of “Ek”, step by step

StepLanguageWordMeaning
1SwedishEkoak
2Old Norseeikoak; tree in general
3Proto-Germanicaiksoak tree; oak
4Proto-Indo-Europeanh₂eyǵ-goat; oak
Every word from Proto-Indo-European h₂eyǵ-