Where does “sweyn” come from?

sweyn (Middle English) comes from Old Norse sveinn, from Proto-Germanic swainaz, from Proto-Indo-European swé — self.

Ancestry of “sweyn”, step by step

StepLanguageWordMeaning
1Old Norsesveinnboy, lad; servant, lackey
2Proto-Germanicswainazrelative; kinsman; young man; herder; herdsman,...
3Proto-Indo-Europeanswéself
Every word from Proto-Indo-European swé →Every word from Proto-Germanic swainaz →Every word from Old Norse sveinn →