Where does “Letzeburgesh” come from?

Letzeburgesh (English) comes from Luxembourgish lëtzebuergesch, from Luxembourgish Lëtzebuerg, from Luxembourgish Lützelburg, from Old High German Lucilinburhuc, from Old High German luzil, from Proto-Germanic luttilaz, from Proto-Germanic lūtilaz, from Proto-Germanic burgz.

Ancestry of “Letzeburgesh”, step by step

StepLanguageWordMeaning
1LuxembourgishlëtzebuergeschLuxembourgish, Luxembourgian, Luxemburgish,...
2LuxembourgishLëtzebuerg
3LuxembourgishLützelburg
4Old High GermanLucilinburhuc
5Old High Germanluzillittle
6Proto-Germanicluttilaz
7Proto-Germaniclūtilazbent; tending to stoop; crouching; little
8Proto-Germanicburgzfortification, stronghold; city
9Proto-Indo-Europeanbʰr̥ǵʰ-
Every word from Proto-Indo-European bʰr̥ǵʰ-Every word from Proto-Germanic burgzEvery word from Proto-Germanic lūtilaz