Ursula is the Latin diminutive of ursa (bear) — meaning "little bear." Saint Ursula was the legendary 4th-century princess martyred at Cologne with 11,000 virgin companions.
Ursula K. Le Guin (1929-2018) was the American science fiction novelist; Ursula Andress (born 1936) was the first Bond girl. Disney's Ursula is the iconic villain of The Little Mermaid.
Ursula 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 Ursula reduce to 2, The Peacemaker. This is a traditional interpretive system, not a factual claim about the name.