Where does “Karlsøya” come from?

Karlsøya (Norwegian Bokmål) comes from Norwegian Bokmål øy, from Old Norse ey, from Proto-Norse *ᚨᚢᛃᚢ, from Proto-Germanic awjō, from Proto-Germanic agwjō, from Proto-Indo-European h₂ékʷeh₂ — water.

Ancestry of “Karlsøya”, step by step

Karlsøya traces back through two separate lines of ancestry.

via Norwegian Bokmål øy

StepLanguageWordMeaning
1Norwegian Bokmåløyan island
2Old Norseeyalways, ever; island
3Proto-Norse*ᚨᚢᛃᚢ—
4Proto-Germanicawjōfloodplain; meadow; island
5Proto-Germanicagwjō—
6Proto-Indo-Europeanh₂ékʷeh₂water

via Old Norse Karl

StepLanguageWordMeaning
1Old NorseKarlman
2Proto-Norseᚲᚨᚱᛁᛚᚨᛉ—
3Proto-Germanickarilazfree man, franklin; little man, young man
4Proto-Germanickaraz—
5Proto-Indo-Europeanǵerh₂-to grow old, to mature
Every word from Proto-Indo-European h₂ékʷeh₂ →Every word from Proto-Germanic agwjō →Every word from Proto-Germanic awjō →