Yolanthe is a ♀ female name.
Yolanthe is a variant of the name Yolanda, which is a name of Greek origin.
Yolanthe means “violet”, “violet blossom” and “purple flower” (from ancient Greek “iólē/ἰόλη” or “íon/ἴον” = violet + “ánthos/ἄνθος” = flower/blossom).