>>6061449 Blessed with fire immunity and thus, allowing the fire to always be raging atop his head but never actually burning his hair, that nameless knight was christened the First Firemane from that day on. He went on to form the noble house of Firemane and the first iteration of the Fire Knight order, sharing the gift of fire with worthy warriors.
....Waaayyy later down the line the Fire Knights discovered that they can use pyromancy to help make things go faster. That was pretty cool so the Fire God was okay with it.