Where does “Biesokówna” come from?

Biesokówna (Polish) comes from Polish -ówna, from Polish -owy, from Old Polish -owy, from Proto-Slavic -ovъ — of, belonging to.

Ancestry of “Biesokówna”, step by step

StepLanguageWordMeaning
1Polish-ównaattached to surnames, sometimes to other nouns, to form feminine proper nouns meaning “daughter of”
2Polish-owy-y
3Old Polish-owyappended to nouns to form adjectives; -y
4Proto-Slavic-ovъof, belonging to
Every word from Proto-Slavic -ovъ →Every word from Polish -owy →Every word from Old Polish -owy →