After the defeat of the Everlasting Dragons Gwyn established the land of Lordran and granted Seath the title of "Duke" along with a part of his Lord Soul for his contribution in the war. He also gave another part of his Lord Soul as well as the titles of "King" to the Four Kings, the leaders of New Londo, in recognition of their foresight. Gwyn resided in the capital city of Anor Londo and had three children:
Lord Gwyn's Firstborn, Old God of War, who was stripped of his deific status and erased from history for his foolishness. He is closely related to the Warrior of Sunlight covenant and inherited the sunlight from his father.
Gwynevere, Princess of Sunlight, who later married Flame God Flann (and presumably left the land with him).
Dark Sun Gwyndolin, who was raised as a girl for his affection to the moon.
The Age of Fire began prosperous and rich, but soon the fires started to go out again and with them the power of the Lords. In an effort to prolong Age of Fire, the Witch of Izalith tried to recreate the First Flame, but the experiment failed and a flame called "The Flame of Chaos" is created instead, which transformed her into the Bed of Chaos and many creatures into the demons that roam Lordran. Her children are transformed as well, with her son becoming a flame demon called Ceaseless Discharge and her daughter Quelaag and her sister partially into spiders. Her followers stay loyal to her, however, and become known as the "Witches of Chaos". Only her daughter, Quelana, escaped the fire and becomes the mother of pyromancy.
Gwyn, in a final effort to save the Age of Fire, marches with a great deal of his army to the Kiln of the First Flame and sacrifices himself to link with the First Flame, turning the Kiln to ash and incinerating his entire army (making them the Black Knights, who later walk Lordran). The attempt is only somewhat successful, however, as the Age of Fire was only extended for a short period of time. Gwyn became a hollow and is from then on known as "Gwyn, Lord of Cinder".
The Four Kings became corrupted and were seduced by evil at some point after Gwyn's fall and their servants turned into Darkwraiths. In an effort to stop them New Londo was flooded with all of its population, trapping the Four Kings with their Darkwraiths in the Abyss.
Soon after, the deities began leaving Lordran. Gwyndolin was the only one of Gwyn's children to stay behind...
Seath, who became obsessed with his research and experiments, amassed countless tomes and was eventually driven mad by his research. He became a powerful sorcerer and "the grandfather of sorcery".
But the rest of the story is for you the chosen undead to decide will you bring the age of fire to a halt or continuing the age of fire by linking the first flame.
