This is a list of names in which the usage is French; and the description contains the keyword moon.
Alan m English, Scottish, Breton, French, PolishThe meaning of this name is not known for certain. It was used in Brittany at least as early as the 6th century, and it possibly means either
"little rock" or
"handsome" in Breton. Alternatively, it may derive from the tribal name of the Alans, an Iranian people who migrated into Europe in the 4th and 5th centuries.
... [more] Cynthia f English, French, Greek Mythology (Latinized)Latinized form of Greek
Κυνθία (Kynthia), which means
"woman from Cynthus". This was an epithet of the Greek moon goddess
Artemis, given because Cynthus 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. It reached a peak of popularity in the United States in 1957 and has declined steadily since then.