Aisling is an Irish name meaning "dream" or "vision" — referring particularly to the Aisling poetic tradition of 17th-19th century Ireland. An Aisling is a vision poem in which Ireland appears to the poet as a beautiful woman lamenting the loss of her freedom under English rule.
Aisling is among the most popular Irish girls' names — solidly in the Irish top 30 for decades. Outside Ireland the unfamiliar spelling-to-sound mapping (Aisling → ASH-ling) has limited adoption, but the name is rising.
Aisling 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 Aisling reduce to 8, The Visionary. This is a traditional interpretive system, not a factual claim about the name.