Fire, earth, air and water

One of earth one of air, one lives dreams the other in poverty's care
Begun at birth both bare, sun gives beams, a mother's despair
Ever flowing river, not to be held, dancing flames burning delight
In blood deliver from belly swelled, romancing games, a yearning in white
Mother of fire, father of earth, destiny determined from their birth
Air ageless gold no rust does hold, a skirt of dirt comfortable in dearth