Svea is from the Old Swedish Svea — the personification of Sweden (literally meaning "of the Sveas," the Swedish people). Princess Svea — modern Swedish royal heritage.
Svea 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 Svea reduce to 2, The Peacemaker. This is a traditional interpretive system, not a factual claim about the name.