Where does “Janey” come from?

Janey is an English diminutive formation derived from Jane, which comes from Middle French -ie and Latin -ia suffixes ultimately tracing to Proto-Indo-European -kos.

Ancestry of “Janey”, step by step

Janey traces back through two separate lines of ancestry.

via English jan

StepLanguageWordMeaning
1EnglishjanObsolete form of jinn
2EnglishJanetA highly classified fleet of passenger aircraft used to transport the military and contractors
3EnglishJaneA woman, often specifically a girlfriend;...
4FrenchJeanneJane, feminine of John
5Old FrenchJehane
6Medieval LatinJohanna
7LatinJoanna
8Ancient GreekἸωάννα
9Hebrewיוֹחָנָה
10HebrewיוֹחָנָןGod is gracious
11HebrewיְהוֹחָנָןGod is gracious

via English ey

StepLanguageWordMeaning
1EnglisheyAn egg; An island; 1975 August 23, Black, Judie,...
2EnglishtheyA group of people, animals, plants, or objects...
3Englishthe'ePronunciation spelling of there
4EnglishthereIn a place or location at some distance from the...
5Old Englishþærthere
6Proto-West Germanicþārthere
7Proto-Germanicþarthere, in that place
8Proto-Indo-Europeantar-there
9Proto-Indo-Europeanto-it; that; the, that
10Proto-Indo-Europeanthis; that
Every word from Hebrew יְהוֹחָנָןEvery word from Hebrew יוֹחָנָןEvery word from Hebrew יוֹחָנָה
Janey — Etymology, Origin & Word History | Etymology Explorer