Where does “Gustavsson” come from?

Gustavsson (Swedish) comes from Swedish Gustav, from Old Swedish Gøtstaf, from Old Norse Gautstafr, from Old Norse stafr, from Proto-Norse ᛋᛏᚼᛒᚼ, from Proto-Germanic stabaz, from Proto-Indo-European stebʰ- — to stand still; to harden.

Ancestry of “Gustavsson”, step by step

Gustavsson traces back through two separate lines of ancestry.

via Swedish Gustav

StepLanguageWordMeaning
1SwedishGustavThe letter "G" in the Swedish spelling alphabet
2Old SwedishGøtstaf—
3Old NorseGautstafr—
4Old Norsestafrstaff
5Proto-Norseᛋᛏᚼᛒᚼ—
6Proto-Germanicstabazstaff, stick
7Proto-Indo-Europeanstebʰ-to stand still; to harden

via Swedish son

StepLanguageWordMeaning
1Swedishsonson; someone's male child
2Old Swedishsonson
3Old Norsesonrson
4Proto-Germanicsunuzson
5Proto-Indo-European*suhnús—
Every word from Proto-Indo-European stebʰ- →Every word from Proto-Germanic stabaz →Every word from Proto-Norse ᛋᛏᚼᛒᚼ →