Where does “Rościsław” come from?

Rościsław (Polish) comes from Polish sława, from Proto-Slavic slàva, from Proto-Indo-European ḱlew-, from Proto-Indo-European ḱel- — to cover; to incline.

Ancestry of “Rościsław”, step by step

Rościsław traces back through two separate lines of ancestry.

via Polish sława

StepLanguageWordMeaning
1Polishsławafame, glory, name; A famous person; a big name; a...
2Proto-Slavicslàvafame; glory; glory, fame
3Proto-Indo-Europeanḱlew-to hear
4Proto-Indo-Europeanḱel-to cover; to incline

via Polish róść

StepLanguageWordMeaning
1Polishróśćto grow
2Old Polishróść—
3Proto-Slavicorstito grow
4Proto-Indo-Europeanh₃ér-to move, to stir
Every word from Proto-Indo-European ḱel- →Every word from Proto-Indo-European ḱlew- →Every word from Proto-Slavic slàva →