Hestia

Hestia is Zeus sister. She is a virgin goddess. She does not have a distinct personality. She plays no part in myths. She is the Goddess of the Hearth, the symbol of the house around which a new born child is carried before it is received into the family. Each city had a public hearth sacred to Hestia, where the fire was never allowed to go out. Of all the Olympians, she is the mildest, most upright and most charitable.

 ( http://greekmythology.com/ )