 That Poseidon and Erechtheus were two names at Athens for the same figure (see below) was demonstrated in the cult at the Erechtheum, where there was a single altar, a single priest and sacrifices were dedicated to "Poseidon Erechtheus", Walter Burkert observed, adding "An historian would say that a Homeric, pan-Hellenic name has been superimposed on an autochthonous, non-Greek name.