Lannisport

Lannisport is a walled city in the Westerlands located less than a mile south of Casterly Rock, the seat of House Lannister. Lannisport is located along the coast of the Sunset Sea where the River Road, the Gold Road, and the Ocean Road meet. It is one of the major ports of the Seven Kingdoms and is the largest settlement in the Westerlands. Lannisport is smaller than King's Landing or Oldtown but larger than Gulltown or White Harbor.

Lannisport is ruled by House Lannister of Lannisport, a branch of House Lannister of nearby Casterly Rock. The Lord of Casterly Rock includes "Shield of Lannisport" amongst his titles. The Lannisters anchor their fleet in its harbor. The city is renowned for its goldwork. Lannisport is policed by the well-trained City Watch. Besides the Lannisters of Lannisport, other distant kin living in the city are Lannys, Lannetts, and Lantells, many of whom are yellow of hair.

Origins
A lesser branch of House Lannister of Casterly Rock developed a village a mile from Casterly Rock into first a town and then a city, as the fertile vicinity has a natural harbor with abundant fish. While the Lannisters of Lannisport fortified the city, the Lannisters of Casterly Rock became the Kings of the Rock. By the time of the Andal invasion the only city in Westeros larger than Lannisport was Oldtown. It is said that King Loreon V Lannister, nicknamed Queen Lorea, disguised himself as a whore and wandered the docks of the city.

Due to the city's proximity to the Iron Islands, Lannisport has often been a target for their attacks, being burned at least three times and raided two dozen times over the centuries. After being mutilated by the Shrike, Lelia Lannister was sent from the Iron Islands back to Lannisport, which led to years of warfare between the Ironborn and the Westermen.

300-301AC - The Second War of Conquest
After the fall of Tommen Baratheon and Cersei Lannister, the Lannisters of Lannisport do not object to Tyrek Lannister being named the new Lord of the Rock by Aegon VI and Daenerys Targaryen. Lannisport bends the knee to the Targaryens, and the rest of the Westerlands follows soon thereafter.

335AC - The Red God Revival
Lannisport was one of many cities in Westeros that saw a surge of Red God worshippers, as the events across the Narrow Sea and the legend of the saviour who fought the Others with a flaming sword began to spread. Though they did not prove as troublesome here as they did in other regions, the City Watch of Lannisport kept a careful eye, and the faith did not spread far from its centers within the city.

339AC - The Summer Sickness
The Westerlands was terribly afflicted by the effects of the Summer Sickness, with Lannisport being the most heavily affected settlement due to its constant exposure to incoming trade. Many grew fearful and suspicious of strangers, most especially the red god adherents who had begun settling in the city only four years before. Some were ousted, their property revoked, and either turned to banditry in the hillside or returned to the lands of the east.

4th Century AC
During the Scarlet Winter, the Lion’s Bay froze near a third up its length, jagged ice floes drifting between the narrowing coastlines before freezing solid near the city itself. Though the sight was a rather pretty one, inspiring artists to create renditions of the Rock rising proud against the pale vista of the city and its waters, trade all but halted, ships unable to reach the ports. The Lannisters hired men to break up the ice, tramping out in great teams strung along ropes, but after the first tragedy struck, no man dared risk life and limb to fight the cold grip of winter.