Rongo is from the Maori Rongo — peace, news, sound Polynesian deity name. Rongo is one of the Maori unisex names — central to traditional Maori Indigenous Polynesian heritage. Maori unisex name reflecting pan-Polynesian Indigenous heritage.
Rongo 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 Rongo reduce to 6, The Nurturer. This is a traditional interpretive system, not a factual claim about the name.