Where does “Bolmsø” come from?

Bolmsø (Old Swedish) comes from Old Swedish ø, from Old Norse ey, from Proto-Norse *ᚨᚢᛃᚢ, from Proto-Germanic awjō, from Proto-Germanic agwjō, from Proto-Indo-European h₂ékʷeh₂ — water.

Ancestry of “Bolmsø”, step by step

StepLanguageWordMeaning
1Old Swedishøa letter of the Old Swedish alphabet, written in the Latin script
2Old Norseeyalways, ever; island
3Proto-Norse*ᚨᚢᛃᚢ—
4Proto-Germanicawjōfloodplain; meadow; island
5Proto-Germanicagwjō—
6Proto-Indo-Europeanh₂ékʷeh₂water
Every word from Proto-Indo-European h₂ékʷeh₂ →Every word from Proto-Germanic agwjō →Every word from Proto-Germanic awjō →