War of Dorne Sucession

War of Dorne Sucession was the war that descided who would suceed Doran Martell as "Prince of Dorne": The Canidates were Trystane Martell, Doran's only surviving son, and Alek Sands, the bastard child of Doran's younger brother, Oberyn Martell.

Prologue
The War started when Alek discovered that his half-sisters, the Sand Snakes, were imprisoned beneath. Once he freed them, he allowed them to escape by stealing an iron dagger and holding all gaurds in their pursuit, but was captured and brought before his uncle, who cut two scars into each of his cheeks, before Alek broke free and stabbed the Prince in the heart. He then with his blade scrape off the prince's skin from his face with the rusty edge of the dagger before fleeing to meet his half-sisters at Sandstone to raise banners in rebellion.

Tristane, Doran's only living son took up the throne and branded any man by the name of "Sands" a traitor. So many Bastards of Dorne became united under the banner of "Alek the Sander" as he became known as for sanding off the faces of his enemies.

Battles
Siege of Starfall - (House Sanders Victory) 

Alek led his forces of bastards through gates via roads under cloaks, the gaurds were unknowing to their plan, as when the siege began, the troops already inside killed the patrol gaurds and let the rest of the army in.

Siege of Blackmont - (House Sanders Victory)

Siege of Kingsgrave - (House Sanders Victory)

Battle of Green Blood - (Decisive House Martell Victory/ Tactical House Sanders Victory)

While Alek was securring the roads, the Sand Snakes marched a small army to raid the farms around Sunspear, Trystane saw this and brought his entire royal guard of 3,000 to deal with the smaller 200. The Battle was an easy won, but it had bought Alek more time securing the Wyl.

Siege of Wyl - (House Sanders Victory)

Battle of the Doorish Marsh - (House Sanders Victory)

Sacking of Sunspear - (House Sanders Victory)

With Trystane dead in the Marsh, Alek turned his attention towards Sunspear, where some lords were trying to find a new heir. Alek ravaged the city looking for his rightful crown after cutting his way through the lords men, until he finally placed the crown on his head.

Aftermath
Alek the Sander became Prince Alek I Sanders, Prince of Dorne, Lord of Summer. The Sanders family became the new ruling house of Dorne and the bastard name of Dorne changed from "Sands" to "Tryst" named from a speech said by Alek once word was out that Trystane had finally left his fortress of Sunspear.