Latinized form of Greek Κυνθια (Kynthia)
which means "woman from Kynthos". This was an epithet of the Greek moon goddess Artemis
, given because Kynthos was the mountain on Delos on which she and her twin brother Apollo
were born. It was not used as a given name until the Renaissance, and it did not become common in the English-speaking world until the 19th century.