Nitocris ( Greek Νίτωκρις) has been claimed to have been the last Pharaoh of the 6th Dynasty of Egypt, and perhaps the first female ruler of Egypt, the first known Queen regnant in the world, and the first of three women to take the title of Pharaoh (the other two being Hatshepsut of the Eighteenth Dynasty and Cleopatra VII of the Ptolemaic dynasty). Her name is found in the Histories of Herodotus and writings of Manetho. According to Herodotus (Histories ii), she invited the murderers of her brother, the king of Egypt, to a banquet, then killed them by flooding the sealed room with the Nile.