Jaroslava is one of the Czech feminine names — central to traditional Czech-Slavic heritage. Czech feminine name reflecting Slavic Indigenous heritage.
Jaroslava is a compound name. Its parts are jarŭ + slava — each an attested element with a recorded meaning of its own.
Jaroslava does not currently appear in the US Social Security Administration's top 1,000 girls' names, so we don't publish a US rank or birth count for it. That says nothing about the name's standing elsewhere in the world — only that it sits outside the ranked US data we rely on.
In Pythagorean numerology the letters of Jaroslava reduce to 9, The Giver. This is a traditional interpretive system, not a factual claim about the name.