Woman from Kynthos
A variant spelling of Cynthia, which is a Greek name referring to a person from Mount Kynthos on the island of Delos. In Greek mythology, this was an epithet for the moon goddess Artemis, who was said to have been born there.
Less common today
Cynthya isn't in the latest US Top 1000. It last peaked at #6,397 in 2001.
US births per 5-year period, 1990βpresent (SSA data).