Where does “Judeo-French” come from?

Judeo-French (English) comes from English French, from Middle English French, from Old English Frenċisċ, from Old English Franca, from Proto-West Germanic frankō, from Proto-Germanic frankô, from Proto-Indo-European prAng- — pole, stalk.

Ancestry of “Judeo-French”, step by step

StepLanguageWordMeaning
1EnglishFrenchThe people of France; groups of French people;...
2Middle EnglishFrench
3Old EnglishFrenċisċFrankish
4Old EnglishFrancaFrank, Frenchman; a Frank
5Proto-West Germanicfrankōspear, javelin; a Frank
6Proto-Germanicfrankôspear, javelin; a Frank
7Proto-Indo-EuropeanprAng-pole, stalk
Every word from Proto-Indo-European prAng-Every word from Proto-Germanic frankôEvery word from Proto-West Germanic frankō