Hestia.
Vesta.
Household and hearth fire
Hestia was the Greek goddess of the hearth, family, home, and fire
As a goddess there was very little she did not know.
Hestia is the goddess of the hearth, family, and home.
Since she is the goddess of the hearth, Hestia can control a fire.
Hestias' symbol is the hearth fire, as she is the goddess of hearth and home.
That of the goddess of home, hearth, fire and cooking.
I'm not aware of a Roman goddess of fire, but the goddess of the hearth and the home was Vesta, whose priestesses were the Vestal virgins.
Hestia is goddess of fire, and as the home/hearth is on earth, also a goddess of it as a granddaughter of Gaea, the Earth personified.
Hestia the Goddess of Hearth was identified because she took care of the hearth of fire.