Maïwenn is a Breton name combining Mari (Mary) and gwenn (fair, white) — meaning "fair Mary." Brittany is the Celtic region of northwestern France.
Maïwenn Le Besco (born 1976) is the French-Breton actress and filmmaker.
Maïwenn 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 Maïwenn reduce to 6, The Nurturer. This is a traditional interpretive system, not a factual claim about the name.