What does prospero mean in his speech to Ariel the temptest?

In his speech to Ariel in Act IV, Scene I of The Tempest, Prospero uses the word "prospero" to refer to himself in a positive light. He says, "I am Prospero, master of this isle," emphasizing his power and authority over the island. The name Prospero is derived from the Latin word "prosperus," which means "prosperous" or "successful." By using this name, Prospero is asserting his success in controlling the events on the island and achieving his goals. He is also highlighting his command over the spirits and forces of nature, which he has used to manipulate the events of the play and bring about his desired outcomes.