Where does “Carlingian” come from?

Carlingian (English) comes from English carling, from English -ling, from Middle English -ling, from Old English -ling, from Old English lang, from Proto-West Germanic lang, from Proto-Germanic langaz, from Proto-Indo-European dlongʰos — long.

Ancestry of “Carlingian”, step by step

StepLanguageWordMeaning
1EnglishcarlingA piece of squared timber fitted fore-and-aft...
2English-lingsmall, immature, miniature; follower or resident;...
3Middle English-lingAn adverbial suffix denoting direction, state or position
4Old English-lingadverbial suffix denoting direction, state or...
5Old Englishlanglong; lasting; old, ancient; advanced
6Proto-West Germaniclanglong
7Proto-Germaniclangazlong
8Proto-Indo-Europeandlongʰoslong
Every word from Proto-Indo-European dlongʰosEvery word from Proto-Germanic langazEvery word from Proto-West Germanic lang