Ptah is the deification of the mound, Tatenen. Though Tatenen, is a god of earth, Ptah is called as the god of fertility and the creation. It was said, that it was Ptah who called the world into being, having dreamt creation in his heart, and speaking it, his name meaning opener, in the sense of opener of the mouth. Indeed the opening of the mouth ceremony, performed by priests at funerals to release souls from their corpses, was said to have been created by Ptah. Atum was said to have been created by Ptah to rule over the creation, sitting upon the primordial mound. In Memphis, Ptah was worshipped in his own right, and was seen as Atum's father, or rather, the father of Nefertum, the younger form of Atum. When the beliefs about the Ennead and Ogdoad were later merged, and Atum was identified as Ra (Atum-Ra), himself seen as Horus (Ra-Herakhty), this led to Ptah being said to be married to Sekhmet, at the time considered the earlier form of Hathor, Horus', thus Atum's, mother.