Third Trident Reclamation War

The Stormlands, for the third time since losing the Trident to the Ironborn, mount another offensive that fails yet again, though this time

Prelude
Following King Arrec's disastrous campaign, Stormlands forces were weakened, its army greatly diminished. It was at this time, the Lords of the Stormlands rebuilt their armies and prepared for another conflict, hoping their greater time invested in preparation and training would pay off.

The War
He made war against King Harwyn Hoare in the Riverlands, crossing the Blackwater Rush and following it straight north to the God's Eye. There he would meet Harwyn and his forces south of the Lake in a massive battle that would see the Storm King dead and thousands on both sides perishing in a three day series of battles called "The Bloodletting".

Along the coast of the Blackwater Bay, the lords there had remained quiet during the war, keeping their forces at home during the conflict, while allowing Stormlands to cross Blackwater Rush at first. But seeing the tides turned against Storm King, they would assist Hoare in driving away Stag past Blackwater.

The new Hoare king, Harren, was a young man, and was faced with a rebellion from within his own kingdom soon after the death of his father, as Lords Bracken, Tully, and Ryger all rose up in an attempt to free themselves from the Ironborn. Seeing their chance, many lords of the Blackwater declared their independence, fortifying their keeps and the crossing of the Blackwater Rush.

Blackwater Independence
The new young King Durrandon would see an opportunity to reclaim some of his old territory and attempted to cross the Blackwater Rush only to be repelled by the forces of Lords Staunton and Cargyll again and again. He would remain with his army on the southern shore with attempts to negotiate with the Reach to allow them to use their lands to bypass the crossing further upstream ended in failure and the King was forced to continue the standoff. First it was days, then it was weeks, which stretched into moon. At last, after lengthy and angry debate with his lords, King Durrandon turned his army south, ending the war. The maesters will later call this battle the Standing at Blackwater or Blackwater stand-off.

In the north, King Harren and his forces had managed to defeat the rebellious riverlords but were too weakened by both wars to move against the fortified castles on Blackwater Bay, so Harren begrudgingly accept the loss of some of his south, though he was happy to have a buffer between himself and the Stormloands.

Following their victory and subsequent independence, Blackwater houses created the Blackwater Confederation. The first Lord Protector, Lord Davos Darklyn, is elected as Lord Protector from among the lords there.