First Dragon War

The First Dragon War was a war fought between the Dragonlord of Darkness, Velkyn, and the Dragonqueen of Light, Livia. The reason for the war is unknown, but it was likely an argument which escalated into a international conflict. Both Dragon Sovereigns rallied up support for their cause among their followers, and caused a war which raged across Tyrrus for many years.
On Livia's side was the Kingdom of Tyranness, lead by the legendary King Solas Sorrowsong, and a number of local tribes he gathered together.
On Velkyn's side was the remnants of the Rune Kingdom, lead by Zaikerik the Betrayer, alongside the Dark Monks.
The war began in the middle of the Seventh Century, and lasted roughly two decades.
Though Solas Sorrowsong achieved victory over Zaikerik and his dark forces, the war was considered inconclusive, since it was ended when both Velkyn and Livia were trapped in the Abyss by Zaikerik, who betrayed his draconic masters in order to end the war, earning him the moniker "The Betrayer".