Lark is from the Old English lāwerce (the lark — a small songbird famous for its early-morning song). The lark in literature — "Hark, hark! Bird thou never wert" — one of the most-anthologized English Romantic poems; the lark is the traditional symbol of dawn and joy across European poetic tradition. Larks (corned lamb) — historic British dish. Lark, Saskatchewan — small Canadian town. Lark Pien — American graphic novelist.
Lark 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 Lark reduce to 6, The Nurturer. This is a traditional interpretive system, not a factual claim about the name.