Khasekhemwy was the last Pharaoh of the Second Dynasty of Egypt. Little is known about him, other than that he led several significant military campaigns, reunified Egypt by his 13th year and built the large mudbrick structure known as Shunet El Zebib. c. 2800 BC – c. 2700 BC; died at about 100. Alive at the same time as Imhotep and Djoser. Wiki link