Where does “elfenfolk” come from?

elfenfolk (English) comes from English elfen, from English -en, from Middle English -en, from Old English -en, from Old Norse -inn, from Proto-Norse -īna-, from Proto-Germanic -īnaz, from Proto-Indo-European -iHnos — adjectival suffix.

Ancestry of “elfenfolk”, step by step

elfenfolk traces back through two separate lines of ancestry.

via English elfen

StepLanguageWordMeaning
1EnglishelfenBelonging to, or relating to, elves
2English-enDenotes the past participle form when attached to...
3Middle English-enDenotes the past participle form when attached to...
4Old English-enmæġþ + API → mæġden; cocc + API → cycen, cicen;...
5Old Norse-innUsed to create adjectives from nouns, meaning...
6Proto-Norse-īna-
7Proto-Germanic-īnaz-en
8Proto-Indo-European-iHnosCreates adjectives of materials
9Proto-Indo-European-no-adjectival suffix

via English folk

StepLanguageWordMeaning
1EnglishfolkOf or pertaining to the inhabitants of a land,...
2Germanvolkpeople, nation, folk, tribe, race group united by culture, history, descent, and/or language
3Middle High Germanvolc
4Old High Germanfolcfolk; people collectively, nation; people, nation
5Proto-West Germanicfolkpeople, tribe
6Proto-Germanicfulkąpeople; tribe
7Proto-Indo-Europeanpleh₁-to fill
Every word from Proto-Indo-European -no-