Estella is the Latin and Spanish form of Stella — from the Latin stella, meaning "star." The Italian Estela carries the same root.
The character has fascinated readers for over 160 years. Today Estella sits in the U.S. top 500 and is rising.
Estella 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 Estella reduce to 2, The Peacemaker. This is a traditional interpretive system, not a factual claim about the name.