Where does “Osleset” come from?

Osleset (Old English) comes from Old English set, from Proto-West Germanic set, from Proto-Germanic setą, from Proto-Indo-European sed- — to sit.

Ancestry of “Osleset”, step by step

Osleset traces back through two separate lines of ancestry.

via Old English set

StepLanguageWordMeaning
1Old Englishsetseat
2Proto-West Germanicsetseat
3Proto-Germanicsetąseat
4Proto-Indo-Europeansed-to sit

via Old English ōsle

StepLanguageWordMeaning
1Old Englishōslea (European) blackbird, an ouzel
2Proto-West Germanicamslāblackbird
3Proto-Indo-Europeanh₂ems-to give birth, beget
Every word from Proto-Indo-European sed-Every word from Proto-Germanic setąEvery word from Proto-West Germanic set