Cronus and Rhea had the following gods as children: Zeus, Hades, Poseidon, Hera, Hestia and Demeter, so Cronus and Rhea had 6 children.
The name of Zeus's mother is Rhea. She was a Titaness in Greek mythology and the wife of Cronus, who was Zeus's father. Rhea played a significant role in protecting her children from Cronus, who feared being overthrown by them.
Rhea saved Zeus from being eaten by his father Kronos by tricking him into swallowing a rock instead of the baby. She then hid Zeus in a cave on Mount Ida where he was raised in secret until he was strong enough to challenge Kronos.
Rhea was Zeus' mother. They had no offspring together.
Cronus swallowed his children by Rhea, these being Hades, Hestia, Hera, Demeter, and Poseidon.
Hera and several other gods were children of Rhea and Cronus, and were eaten by Cronus right after birth. Zeus, the only one of the couple's offspring who was not eaten, later took revenge on Cronus and forced him to give back the divine children, allowing them to finally grow up.
Hera and Hades were the middle children of Cronus and Rhea according to Hesiod.
Cronus ate all of his children for fear that one of them would over throw him for power one day, as predicted by his mother Gaea. This was payback for what Cronus did to his own father Uraneus. Cronus wife Rhea got tired of having her kids eaten. So she tricked Cronus from eating the last child (Zeus) and fed him a rock instead.
Rhea hid Zeus in a cave to protect him from being devoured by his father, Cronus, who feared a prophecy that one of his children would overthrow him. By hiding Zeus, Rhea ensured his safety and allowed him to grow up strong and eventually fulfill the prophecy.
The children of Cronus (or Kronos) and Rhea were all the 12 Olympians. If you have read the books in the Percy Jackson and the Olympians series, the children of the Titans Cronus and Rhea are the gods who have thrones on Mount Olympus, including Hades, even though he doesn't have a throne.
Rhea has about eight children, according to myth. There are the six with Kronos (Zeus, Hades, Poseidon, Demeter, Hera, and Hestia) And then there were two more children that she had later with a second husband. I do not know the names of these children, or the Father.
Probably Kronos because he tried to eat all Rhea's children, but Zeus grew up and Rhea, along with Zeus, killed Kronos.