Yaroslavna means "daughter of Yaroslav." Anna Yaroslavna (c. 1030-c. 1075) was the Kievan princess, daughter of Grand Prince Yaroslav the Wise, who traveled across Europe to marry King Henry I of France in 1051, becoming Queen Anne of France. She was literate (signing documents in her own hand in Cyrillic) while her French husband was not — an Old Slavonic gospel book she brought is said to be the one on which French kings swore their coronation oaths.
Mother of King Philip I of France.
Yaroslavna 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 Yaroslavna reduce to 2, The Peacemaker. This is a traditional interpretive system, not a factual claim about the name.