Aušra is the Lithuanian word for "dawn" — also the name of the goddess of the morning star in Baltic mythology, related to the Greek Eos.
Aušra was the name of the first Lithuanian-language newspaper (1883), a symbol of the Lithuanian national revival.
Aušra 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.
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In Pythagorean numerology the letters of Aušra reduce to 1, The Leader. This is a traditional interpretive system, not a factual claim about the name.