Where does “Vulcănescu” come from?

Vulcănescu (Romanian) comes from Romanian Vulcan, from Hungarian Volkány, from Old Church Slavonic влькъ, from Proto-Slavic vьlkъ, from Proto-Balto-Slavic wilkás, from Proto-Indo-European wĺ̥kʷos — wolf.

Ancestry of “Vulcănescu”, step by step

StepLanguageWordMeaning
1RomanianVulcanVulcan
2HungarianVolkány—
3Old Church Slavonicвлькъwolf
4Proto-Slavicvьlkъwolf
5Proto-Balto-Slavicwilkáswolf
6Proto-Indo-Europeanwĺ̥kʷoswolf
Every word from Proto-Indo-European wĺ̥kʷos →Every word from Proto-Balto-Slavic wilkás →Every word from Proto-Slavic vьlkъ →