Son of Tantalos, cut to pieces and served as food to the gods.
The More'a was called Peloponue sos or the “island of Pelops,” from
this mythical king.
The ivory shoulder of the sons of Pelops.
The distinguishing or distinctive mark of anyone. The tale is that
Demeter ate the shoulder of Pelops when it was served up by Tantalos,
and when the gods put the body back into the cauldron to restore it to
life, he came forth lacking a shoulder. Demeter supplied an ivory
shoulder, and all his descendants carried this mark in their bodies. (See Pythagoras.)
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894