Lesedi is from the Sesotho/Setswana lesedi (light). Lesedi La Rona — one of the largest gem-quality diamonds ever discovered (1,109 carats, found in 2015 at the Karowe Mine in Botswana); the name means "our light" in Setswana; sold at Sotheby's for $53 million in 2017 — making it one of the highest prices ever paid for an uncut diamond. Lesedi Khumalo — modern South African-American figure. Princess Lesedi — modern Southern African heritage naming.
Lesedi 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 Lesedi reduce to 9, The Giver. This is a traditional interpretive system, not a factual claim about the name.