Where does “Lewis” come from?

Lewis (Middle English) comes from Old French Louis, from Latin Ludovīcus, from Old High German Hlūtwīg, from Proto-West Germanic Hlūdawīg, from Proto-West Germanic hlūd, from Proto-Germanic hlūdaz, from Proto-Indo-European ḱlewtos, from Proto-Indo-European ḱlew- — to cover; to incline.

Ancestry of “Lewis”, step by step

StepLanguageWordMeaning
1Old FrenchLouis
2LatinLudovīcus
3Old High GermanHlūtwīg
4Proto-West GermanicHlūdawīgmeaning famous in battle
5Proto-West Germanichlūdloud; sound
6Proto-Germanichlūdazloud; famous
7Proto-Indo-Europeanḱlewtosheard, famous
8Proto-Indo-Europeanḱlew-to hear
9Proto-Indo-Europeanḱel-to cover; to incline
Every word from Proto-Indo-European ḱel-Every word from Proto-Indo-European ḱlew-Every word from Proto-Indo-European ḱlewtos