More info about the name "Sindy"
Sindy is a diminutive of Cynthia. Cynthia originates in Greek language and means "born on Cynthus". In Greek mythology, Cynthus was a mountain on the isle of Delos, where Artemis, the Greek goddess of the moon, was born. Due to that, Cynthia became her epithet. In the English-speaking countries it has been used since the 19th century.