Kronos, also spelled Cronus (Greek: Κρόνος, "Krónos"; Latin: CRONVS, "Cronus"), is the leader of the Titans and the Titan of time in Greek mythology. The son of Gaia (Mother Earth) and Ouranos (Father Sky), he was the youngest of his brothers. At the urging of Gaia, Kronos castrated his father, Ouranos, with a sickle and overthrew him, ruling the cosmos as king during the so-called Golden Age. Kronos married his sister Rhea, and sired the first generation of the Olympian gods: Hestia, Demeter, Hera, Hades, Poseidon, and Zeus.