Question: how many sons did cronus and rhea have?
Answer: Family. According to Hesiod, Cronus sired six children by Rhea: Hestia, Demeter, Hera, Hades, Poseidon, and Zeus in that order. The philosopher Plato recounts that Rhea, Cronus and Phorcys were the eldest children of Oceanus and Tethys.