Summerhall

Summerhall is a lightly fortified castle used by House Targaryen as a summer castle and royal residence, it was destroyed in a great fire in 259 AC, but reconstruction began in the year 318 AC.

While the heir apparent to the Iron Throne was known as the Prince of Dragonstone, a younger son will often be titled the Prince of Summerhall.

Located near the foothills of the Red Mountains, the castle of Summerhall is close to the Stormlands' border with the Reach, east of the Cockleswhent and southeast of the Blueburn. The Boneway runs south from Summerhall through the Dornish Marches to Yronwood in Dorne.

History
Summerhall was built in the Dornish Marches during the notably pro-Dornish reign of King Daeron II. It was a Targaryen summer castle and royal residence used frequently by Daeron in his youth. As he grew older, he left King's Landing less frequently and Summerhall passed to his youngest son, Prince Maekar. The prince maintained a household there after the First Blackfyre Rebellion. This was possible since Daeron's heir, Baelor, had Dragonstone, and Aerys and Rhaegel seldom left the court. Maester Melaquin served at Summerhall. The holder of the castle became known as the Prince of Summerhall.

A great fire broke out in the castle in 259 AC, which was a serious blow to House Targaryen. The fire left the castle ruined and resulted in the deaths of King Aegon V Targaryen, his eldest son and heir, Prince Duncan the Small, and the Lord Commander of the Kingsguard, Ser Duncan the Tall. It is sometimes blamed on one of the many Targaryen attempts to bring dragons back by hatching ancient dragon eggs. Archmaester Gyldayn was the last maester to serve at Summerhall.

Prince Rhaegar Targaryen was born at Summerhall on the day of the tragedy. The crown prince grew up with a complex fascination for the ruins. Here he was happiest, yet also saddened by the memory of the tragedy. He liked to visit by himself and sleep in the ruined hall of Summerhall beneath the moon and the stars. Maester Aemon thought Rhaegar's birth was associated with the prince that was promised, but Rhaegar later thought the legend was associated with his own son, Aegon.

Recent Events
Reconstruction of the castle began in the year 318AC, but it was not finished for nearly two decades. By the time the palace was ready, Rhaegar had inherited the Iron Throne from his mother and father, and held the castle until such time as his youngest son was of age.

Prince Maelor Targaryen proved sickly and prone to illness, tragically passing away at a young age. Summerhall then reverted back to Rhaegar, and eventually his son Aenar, who would name his second son Viserys the Prince of Summerhall

List of the Princes of Summerhall
There have been six known Princes of Summerhall since its creation in 188AC. For nearly one hundred years, the castle lay in ruin, until it was rebuilt at the behest of Rhaegar I Targaryen during the reign of King Aegon VI and Queen Daenerys I.
 * Maekar I Targaryen - ~194 - 233AC
 * Aegon V Targaryen - 233 - 259AC
 * Maelor Targaryen - ~335 - 340AC
 * Viserys Targaryen - 357 - 368AC
 * Baelor Targaryen - 368 - 403AC
 * Maekar Targaryen - 403AC - Present