Yolande is from the Old Germanic vio (violet). Yolande of Aragon (1384-1442) was the queen of Sicily, the mother-in-law of King Charles VII of France — credited with funding and supporting Joan of Arc's mission.
Yolande 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 Yolande reduce to 4, The Builder. This is a traditional interpretive system, not a factual claim about the name.