This was the son who afterwards conquered the Peloponnesians in a naval battle at the Arginusae islands, and was put to death by the people along with his fellow-generals.
Edition :
Plutarch. Plutarch's Lives. with an English Translation by. Bernadotte Perrin. Cambridge, MA. Harvard University Press. London. William Heinemann Ltd. 1916. 3.
Remark :
motive: Pericles the Younger and his colleagues are executed because they failed to save the shipwrecked Athenians after the naval battle at the Arginusae islands (https://referenceworks.brillonline.com/entries/brill-s-new-pauly/pericles-e913920#e913990).