This sense seems to be a myth. Zola is a Xhosa verb, not Zulu, and means "appease", not "be calm". The Zulu word is Phola, not Zola. Phola may be altered to Xola in avoidance speech, typically by married women if a father in law or other senior male relative bears a name connected to Phola, but not even Xola is pronounced like Zola. Further Zola seems to be a unisex name — many prominent bearers are men, and its use is broader than South Africa — it's also a popular name for Congolese men, with a different meaning. [noted -ed]
― Anonymous User 6/30/2018
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Zola (entertainer), South African entertainer Calvin Zola (born 1984), Congo DR footballer Zola Budd (born 1966), South African athlete Zola Matumona (born 1981), Congo DR footballer Zola Shuman, South African musician.
It is also a Congolese name meaning "productive", a Venetian name meaning "female kid", a French name derived from the surname of the writer "Emile Zola", an Italian name short for another Italian name "Anzola", a Zulu name meaning "tranquil", and an Italian name meaning "ball of fire" or "ball of earth".