Who are all cronus brothers and sisters?

Answer 1

Rhea (his wife AND his sister), Phoebe,Coeus, Mnemosyne,Themis, Iapetus, Tethys, Oceanus, and Hyperion.

These were the first generations of the Titans.

Definition of Titan:

the children of Mother Earth or also known as Gaia. n Greek mythology, the Titans (Greek: Τιτάν-Ti-tan; plural: Τιτᾶνες-Ti-tânes) were a primeval race of powerful deities, descendants of Gaia(Earth) and Uranus (Heaven), that ruled during the legendary Golden Age. They were immortal giants of incredible strength and stamina and were also the first pantheon of Greco-Roman gods and goddesses.

In the first generation of twelve Titans, the males were Oceanus,Hyperion, Coeus, Cronus, Crius and Iapetus and the females - the Titanesses - were Mnemosyne, Tethys, Theia, Phoebe, Rhea andThemis. The second generation of Titans consisted of Hyperion's childrenEos, Helios, and Selene; Coeus's daughters Leto and Asteria; Iapetus's sons Atlas, Prometheus, Epimetheus, and Menoetius; Oceanus' daughterMetis; and Crius's sons Astraeus, Pallas, and Perses.

The Titans were overthrown by a race of younger gods, the Olympians, in the Titanomachy ("War of the Titans"). This represented a mythologicalparadigm shift that the Greeks may have borrowed from the Ancient Near East.[1]

Cronus and Rhea got married even though they were brothers and sisters and they had 6 children. To me or my opinion is that "Zeus" is the most important son of Cronus and Rhea.