Where does “Marylouise” come from?

Marylouise (English) comes from English Louise, from French Louise, from French louis, from Middle French Loïs, from Old French Looïs, from Latin Ludovīcus, from Old High German Hlūtwīg, from Proto-West Germanic Hlūdawīg — to cover; to incline.

Ancestry of “Marylouise”, step by step

Marylouise traces back through two separate lines of ancestry.

via English Louise

StepLanguageWordMeaning
1EnglishLouise—
2FrenchLouisefart
3FrenchlouisA louis: various gold and silver coins issued by...
4Middle FrenchLoïs—
5Old FrenchLooïs—
6LatinLudovīcus—
7Old High GermanHlūtwīg—
8Proto-West GermanicHlūdawīgmeaning famous in battle
9Proto-West Germanichlūdloud; sound
10Proto-Germanichlūdazloud; famous
11Proto-Indo-Europeanḱlewtosheard, famous
12Proto-Indo-Europeanḱlew-to hear
13Proto-Indo-Europeanḱel-to cover; to incline

via English mary

StepLanguageWordMeaning
1EnglishmaryA male homosexual
2Frenchmariefirst-person singular present indicative of...
3Old FrenchMarie—
4LatinMarīaMary mother of Jesus
5Ancient GreekΜαρίαMary, Maria
6Hebrewמִרְיָם—
7Aramaicמריםbitter
8Biblical Hebrewמִרְיָם—
Every word from Proto-Indo-European ḱel- →Every word from Proto-Indo-European ḱlew- →Every word from Proto-Indo-European ḱlewtos →