Where does “Łabendowicz” come from?

Łabendowicz (Polish) comes from Polish Łabędź, from Old Polish łabęć, from Proto-Slavic olbǫdь, from Proto-Indo-European h₂élbʰos — white.

Ancestry of “Łabendowicz”, step by step

StepLanguageWordMeaning
1PolishŁabędźCygnus, the Northern Cross, a constellation
2Old Polishłabęćswan
3Proto-Slavicolbǫdьswan
4Proto-Indo-Europeanh₂élbʰoswhite
Every word from Proto-Indo-European h₂élbʰos →Every word from Proto-Slavic olbǫdь →Every word from Old Polish łabęć →