Overview
Cynthia is a feminine given name of Greek origin: , , "from Mount Cynthus" on Delos island. The name has been in use in the Anglosphere since the 1600s. There are various spellings for this name, and it can be abbreviated to Cindy, Cyndi, Cyndy, or occasionally to Thea or Thia.
Cynthia was originally an epithet of the Greek goddess Artemis, who according to legend was born on Mount Cynthus. Selene, the Greek personification of the moon, and the Roman Diana were also sometimes called "Cynthia". In Ancient Roman literature 'Cynthia' is the name of Propertius' love.
Usage
It has ranked among the 1,000 most used names for girls in the United States since 1880 and among the top 100 names between 1945 and 1993. It peaked in usage between 1956 and 1963, when it was among the 10 most popular names for American girls. It has since declined in use in the United States and ranked in 806th position on the popularity chart there in 2021.
From Wikipedia (CC BY-SA 4.0).