Where does “gunsel” come from?

gunsel (English) comes from Yiddish גענדזל, from Yiddish גאַנדז, from Middle High German gans, from Old High German gans, from Proto-West Germanic gans, from Proto-Germanic gans, from Proto-Indo-European ǵʰans-.

gunsel (English): Synonym of catamite: a young man kept by an elder...