Kaʻiulani (Hawaiian ka iʻu lani, "the highest royal one") — born Victoria Kaʻiulani Kalaninuiahilapalapa Kawēkiu i Lunalilo Cleghorn — was the last Crown Princess of the Kingdom of Hawaii (1875-1899). Heir apparent at age 16 when her aunt Queen Liliʻuokalani was overthrown by American sugar planters in 1893. Traveled to Washington at 17 to plead Hawaii's case directly to President Grover Cleveland, winning his temporary opposition to annexation. Died at age 23 in 1899, six months after annexation became inevitable — many Hawaiians believed of a broken heart. A graceful and tragic figure who symbolized the lost Hawaiian nation.
Subject of Marc Forby's Princess Kaʻiulani (2009 film).
Kaiulani 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 Kaiulani reduce to 6, The Nurturer. This is a traditional interpretive system, not a factual claim about the name.