Twyla is an American invented name from the early 20th century — possibly from the Old English twi-leah ("twilight") or the textile term "twill" (two-thread weaving). Her 2003 book The Creative Habit: Learn It and Use It for Life is on the New York Public Library's 100 Best Books for Adults. Twyla is also a Schitt's Creek recurring character (Sarah Levy as café owner Twyla Sands).
Twyla 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 Twyla reduce to 9, The Giver. This is a traditional interpretive system, not a factual claim about the name.