Grazyna is from the Polish Grażyna — coined by Polish Romantic poet Adam Mickiewicz in 1823 from the Lithuanian gražus (beautiful, graceful). The story of Grażyna — the heroic Lithuanian princess + wife of Liutawor of Nowogródek who dies disguised in her husband's armor defending against the Teutonic Knights — is central to Polish-Lithuanian Commonwealth heritage.
Grazyna 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 Grazyna reduce to 2, The Peacemaker. This is a traditional interpretive system, not a factual claim about the name.