Sansa is from the Sanskrit saṃsā — "praise, charm" — and was chosen by author George R. R. A top-1000 US baby name since 2013. In Sanskrit literature, Saṃsā is also a feminine name in the Mahābhārata; in Catalan, sansa refers to dried olive pomace.
Sansa 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 Sansa reduce to 9, The Giver. This is a traditional interpretive system, not a factual claim about the name.