Final answer:
Plato was not related by marriage to Pericles. The claim is historically false; there are no records that suggest a marital connection between them.
Step-by-step explanation:
The statement that Plato was related by marriage to the great Athenian statesman Pericles is false. Plato came from a noble family and had connections with the Thirty Tyrants, who were in power briefly after Athens' defeat in the Peloponnesian War, but there is no historical evidence to suggest that Plato was related by marriage to Pericles. Pericles, who presided over Athens' Golden Age, was in a well-known partnership with Aspasia, a Milesian woman of great influence, but there are no records connecting her to Plato by marriage. In fact, there is no historical evidence to suggest any direct familial relationship between Plato and Pericles. Plato was a student of Socrates and the founder of the Academy in Athens, while Pericles was a prominent Greek statesman and general during the Golden Age of Athens. Although they both lived during the same time period, there is no record of them being related by marriage or any other familial ties.