The name Daenerys means Created Name and is of English origin. Daenerys is a name that's been primarily used for girls.
Daenerys is a character name created by character name created by George R.R. Martin in his Song of Ice and Fire novels and Game of Thrones TV series. The character's full name is Daenerys Stormborn Targaryen, and she's called Daeny/Dani for short.
Feedback from a BN member: The name Day could have an alternative spelling of Dae and means Light and Hope from its American origins. Nerys is Welsh in origin meaning Lady. Therefore, Daenerys could mean "Lady of Light" or "Lady of Hope."