Pericles immediately banished his strongest rival, Cimon, who had achieved popularity by bringing the bones of Theseus, slayer of the Minotaur, back to Athens from the island of Scyros. As Theseus was a myth, he could hardly have had any bones. Nevertheless, Cimon brought them back.
Footnote
The Decline and Fall of Practically Everybody (1950) - Part II: Ancient Greeks and Worse - Pericles