Moretz is a variant of Moritz, a Germanized form of the biblical name Moses, based on the originally Hebrew Moshe. According to the biblical etymology, the meaning of the name is "I drew him out of the water" (Exodus 2.10).
Russian Meaning: The name Moriz is a Russian baby name. In Russian the meaning of the name Moriz is: Moorish.
what people don't understand is Mirena is a baby name and means "of the sea" so. try spelling it another way. Myrena or Meerena or Mirina. Mirena is a type of IUD (birth control).