Beatrice comes from the Late Latin Beatrix, derived from beatus ("blessed") — meaning "she who brings happiness" or "the bringer of joy." The Italian form is Beatrice, the original Latin is Beatrix.
Beatrice has been borne by saints, by Dante's idealised beloved in The Divine Comedy (where Beatrice guides the poet through Paradise), and by Queen Beatrix of the Netherlands. Princess Beatrice of York is a modern royal Beatrice. Today the name sits in the U.S. top 250 and is rising — a long classical name returning to use.
Beatrice 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 Beatrice reduce to 9, The Giver. This is a traditional interpretive system, not a factual claim about the name.