She is the eldest daughter of the Titans Cronus and Rhea, and sister of Zeus, Poseidon, Hades, Hera, and Demeter. Despite being the eldest, she was the last to be regurgitated by her father Cronus, and thus is considered both the oldest and the youngest.
Notable Stories Involving Her:
She was originally one of the twelve Olympians, but gave up her seat to Dionysus to keep the peace. Little else is known about her except that she has sworn to remain a virgin forever, and is said to be the gentlest of all the Olympians.
Hestia Around the World:
Her Roman equivalent is Vesta, though she could also be identified with Roma, the personification of Rome.
SOURCES: Greek Mythology.com, MythWeb, Encyclopedia Mythica, & Wikipedia