Eimear is from the Irish Eimear / Emer — Irish mythological feminine name meaning swift, swift one. Eimear is one of the Irish feminine names — central to traditional Irish mythological heritage. Irish feminine name reflecting Celtic mythological heritage.
Eimear 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 Eimear reduce to 6, The Nurturer. This is a traditional interpretive system, not a factual claim about the name.