Yvonne is the French feminine of Yves — from the Germanic iv, meaning "yew" (the tree from which medieval longbows were made). By extension, the name means "archer" or "of the yew."
Yvonne was very popular in the mid-20th century — peaking at #155 in the U.S. in 1937. The American actress Yvonne De Carlo (Lily Munster in The Munsters) and the Belgian actress Yvonne van den Hurk are well known. Today the name sits in the U.S. top 1000 and is slowly rising again.
Yvonne 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.
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In Pythagorean numerology the letters of Yvonne reduce to 5, The Seeker. This is a traditional interpretive system, not a factual claim about the name.