Where does “Nankingese” come from?

Nankingese (English) comes from English -ese, from Middle English -eys, from Old French -eis, from Late Latin -iscus.

Ancestry of “Nankingese”, step by step

StepLanguageWordMeaning
1English-eseUsed to form adjectives and nouns describing...
2Middle English-eysAlternative form of -esse
3Old French-eisused to form nationalities; used to form names of...
4Late Latin-iscus—
Every word from Late Latin -iscus →Every word from English -ese →Every word from Old French -eis →