Jasen I Castor

Jasen I Castor is the current King of Westeros and Head of House Castor. He is the bastard son of King Georgan I Castor and Emme, a kitchen wench. He is known as Jasen of Houes Castor, the First of His Name, King of Westeros, Lord of King's Landing, and Protector of All Men. He also holds the titles of Lord Paramount of the Westerlands, Lord of Casterly Rock and Protector of the West.

His heir is Prince Ryen I Castor.

Childhood
Jasen was the third son, and bastard of King Georgan I Castor and Emme, a kitchen wench. Born without his father's knowing, on his first name day, his mother brought him to the Red Keep before the King. The acknowledged his son, and so he was known as Jasen Waters. He was to be raised with the King's trueborn children.

The King began losing interest in Jasen, but never sent him away. In Westeros, bastards were frowned upon, although, they could be legitimised by the King and given all rights as trueborn children. This was not the case for Jasen. Georgan gave Jasen no rights, and thus he could never be Prince, let alone King.

Emme died when shortly after Jasen's fourth nameday. He began to slowly grow angry. He was treated very queer by his half-brothers Georgan and  Davyd. After his seventh nameday, he would begin sneaking out of the Red Keep. He would stalk stray animals and if he caught them, he slit their throats. He continued this until he was ten.

When Jasen was ten, his father died in battle, and Geogan II was crowned King, and became Head of House Castor. Four years later, when Davyd had his eighteenth nameday, Georgan named him Head of House Castor of Casterly Rock, with Georgan remaining head of the King's Landing branch. Georgan sent him away from the Red Keep.

Jasen's only half-sibling to treat him with any respect was Elia. She would make brief conversation with him, before she was certain she would be caught.

For his fourteenth nameday, Elia gave him thirty silver coins, to be spent however he wished. He hired a tutor to teach him to read. He was such a fast learner, he fired them after a fortnight. He spent the rest in brothels, where he slept with whores, taking care not to get them pregnant. He did not want to father a bastard.

Becoming King
When Jasen was fifteen, his King brother fathered a bastard, whom he named Ryen Waters. Jasen did not want his new half-nephew to be treated as he had.

On the King's twenty-fourth nameday, Jasen had the entirety of the Royal house murdered. His step-mother, his half-siblings and his half-nieces and nephews, all but the babe Ryen. He had promised a group of assassin's ten gold for each kill. They slit all their throats during the Feast. All the Lords and Ladies screamed and ran.

Lord Emmon VII Rushing, among others, made their way their way to the Great Hall, where upon they saw Jasen sitting upon the Iron Throne, wearing a crown he had had forged. He proclaimed himself King, as the only living relative of King Georgan. He demanded that any who denied would be executed. That night, seven lords were beheaded.

When Jasen learned that his half-sister Elia and he husband were murdered, he became outraged. He had told the assassins not to touch her. They had thought that he would pay for the two extra kills. Jasen had them executed as well.

Reign
After his coronation, Jasen adopted his nephew Ryen, and named him Prince Ryen I Castor. He created an alliance with House Rushing, who wanted a stake in royalty. He wed Lord Emmon's second daughter, Paige.

When Jasen was seventeen, Paige gave birth to a son, Prince Jasen II.