Dionyza is Cleon’s wife. Though she swears to Pericles to bring up Marina with as much care as her own daughter Philoten, she soon grows envious of Marina for being just a bit better at everything than Philoten.
This envy grows until she decides to have Marina murdered. She is excellent at acting kind to the girl in the meantime, however. Brusque and unsentimental, she has her husband completely under her thumb, and considers him a weakling. When Marina turns out to be alive and it becomes known what has happened, his people rise against Cleon and herself and burn them alive in their palace.