Daniela is the Italian, Spanish, Portuguese, and German feminine of Daniel — from the Hebrew Dāniyyēl, meaning "God is my judge." The Old Testament prophet Daniel is the most famous bearer of the masculine form.
Daniela is enormously popular across Italy, Spain, and Latin America. In the U.S. it sits in the top 250 and has been climbing. The English spelling Daniella (two L's) is the more common American variant, but Daniela is rising on its own.
Daniela 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 Daniela reduce to 1, The Leader. This is a traditional interpretive system, not a factual claim about the name.