The name Iolanthe is a Greek baby name. In Greek the meaning of the name Iolanthe is: Violet flower. The name of a Gilbert and Sullivan Opera from 1882. Also a mythological sea nymph and daughter of Oceanus.
Yolanda is a given name, of Greek origin but existing in many languages, meaning Violet. The form of the name in Greek is Iolanthe. In German and Dutch the name is spelled Jolanda, in Czech and Slovak Jolantha, in Polish Jolanta, in Italian, Portuguese and Romanian Iolanda.