According to some sources, the couple had four children: Leucon, Erythrius, Schoeneus, and Ptous.
[11] Themisto intended to kill her husband's children by his previous wife, but accidentally slew her own sons.
This was the subject of a non-surviving tragedy by Euripides, retold by Hyginus as follows.
Athamas had her brought home but kept her return a secret; Themisto did find out she was back, and resolved to kill Ino's children as an act of revenge.
[12] According to Pseudo-Apollodorus, however, Themisto married Athamas after the death of Ino, and the whole story with the murder of the children did not take place.