Tatenda is from the Shona Tatenda — we are thankful, thank you. Tatenda is one of the Shona feminine + unisex names — central to traditional Shona Zimbabwean heritage. Shona feminine name reflecting Bantu African heritage.
Tatenda 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.
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In Pythagorean numerology the letters of Tatenda reduce to 2, The Peacemaker. This is a traditional interpretive system, not a factual claim about the name.