 However, these boat graves were established earlier than late in Dynasty II, perhaps for the afterlife journeys of Hor-Aha, the first king (ca.2920–2770) of the First Dynasty of Egypt, or Pharaoh Djer also of Dynasty I.Two more recently located mortuary discoveries have been identified as those of King Aha, who may have been the son of the famous King Narmer, to whom the first unification of Upper and Lower Egypt is often attributed.