Ivory is from the Latin eboreus — "of ivory, the creamy-white material from elephant tusks." A top-500 US baby name from 1971 to 1998. A Room with a View (1985), Howards End (1992), and The Remains of the Day (1993) all earned multiple Academy Award nominations including Best Picture; Howards End won three Oscars including Best Adapted Screenplay; defined the modern English-period-piece genre.
Ivory 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 Ivory reduce to 8, The Visionary. This is a traditional interpretive system, not a factual claim about the name.