Doina is the name of a traditional Romanian musical genre — a lyrical folk song of longing. The word is recognized by UNESCO as part of intangible cultural heritage.
Doina is widely used in Romania as a feminine name.
Doina 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 Doina reduce to 7, The Seeker. This is a traditional interpretive system, not a factual claim about the name.