Where does “Desmarais” come from?

Desmarais (English) comes from French Desmarais, from French marais, from Middle French marais, from Old French mareis, from Medieval Latin mariscus, from Frankish marisk, from Proto-Germanic mari, from Proto-Indo-European móri — to die; to disappear; sea, lake, wetland.

Ancestry of “Desmarais”, step by step

StepLanguageWordMeaning
1FrenchDesmaraisDesmarais
2Frenchmaraisswamp, marsh; land suitable for growing primeur...
3Middle Frenchmarais
4Old Frenchmareismarsh
5Medieval LatinmariscusAlternative form of mariscos
6Frankishmariskmarsh, swamp; lake-like, marshy
7Proto-Germanicmarisea, ocean; lake, body of water
8Proto-Indo-Europeanmórisea; standing water
9Proto-Indo-Europeanmer-to die; to disappear; sea, lake, wetland
Every word from Proto-Indo-European mer-Every word from Proto-Indo-European móriEvery word from Proto-Germanic mari