HBO’sHouse of The Dragonshows that the Riverlands are continuously caught in a conflict, the latest of which is the Targaryen civil war. There are many houses in the Riverlands, and because they are in the middle of the other kingdoms, their lands often become a warzone.

During the thousand years since the First Men set foot in the Riverlands, various families have ruled over them, the most notable of which is House Tully, the ancestors of Catelyn Tully fromGame of Thrones. Since then, they have remained one of the most respectable houses in the Riverlands and played a central role in the Dance Of The Dragons. Later episodes featured the young Oscar Tully, the heir of House Tully, as a character who had a massive glow-up in confidence after only a couple of episodes.

Massive Spoilers ahead for Game of Thrones and House of the Dragon.

Who Is Oscar Tully In House Of The Dragon?

In Season Two of the show,Daemon Targaryen tries to seize control of the Riverlandsby capturing Harrenhal, the largest fortress in the region. He realizes the importance of these lands, not only for their strategic accessibility during times of war butalso as a major crossroads in all of Westeros.

To strengthen the Blacks, Daemon tries tosecure the support of all the great housesin the Riverlands. To do that, he needs the support of Riverland’s lord, Grover Tully. But upon knowing thatthe old lord is gravely illand in no position to issue any commands, Daemon meets his grandson and heir,the young Oscar Tully.

Lord Grover’s ailing healthputs Oscar in a tough spot. As long as his grandfather lives,he cannot exercise any authority over the Riverlordsand therefore, cannot provide Daemon the support he desires. So, Daemon tells Oscar thathe should place a pillow over Lord Grover’s headto hasten his death. This suggestion baffles Oscar,and he declines firmly, telling Daemon thatGrover is like a father to him.

Daemon turns toWillem Blackwood instead, giving him the authority to use any means to punish the Brackens, even if they are questionable,to make the green-aligned House Brackenpledge their allegiance. This decision ultimately backfires on him, and the Riverlords refuse tobend their knees to Queen Rhaenyra.

In the episodes that follow,Daemon’s effort to unite the Riverlands remains constant.But thanks to the help of Harrenhal’s nurse, Alys Rivers, Grover Tully passes away,making his grandson Oscar the new lord of Riverrun. Oscar, who seemed timid during his first appearance on-screen,steals the show with his confidence while addressing the Riverlords.

You’ll forgive me, Your Grace. I am green in this sort of matter, as you so kindly point out, but it does seem to me that you’ve made rather a mess here.

-Oscar Tully to Daemon Targaryen.

He tells them that while he has no love for Daemon Targaryen,his grandfather swore an oath in support of Queen Rhaenyra. He reminds them that the people of the Riverlands are known fortheir integrity and will not break their solemn vows, but the wrongs also must be righted.

He suggestspunishing Willem Blackwoodfor his actions, and Daemon, without a second thought, beheads Willem,securing the full support of the Houses in the Riverlands.

Who is Oscar Tully in the Fire And Blood Books?

While adapting the book Fire And Blood, the creatorscombined three charactersand merged themto form the storyline for Oscar Tully. The character of Oscar Tully seems to have beeninspired by Kermit Tully, his older brother, according to the source material.

During most of the Dance of the Dragons,Kermit Tully is the Lord Paramount of the Riverlands, while in the show, this role is taken on by Oscar Tully. In the books, their father,Elmo Tully, also inherits the seat after Lord Groverfor a brief period,but the show moves in a different direction.

Oscar, his brother Kermit, and Lord Benjicot Blackwoodparticipated in many battles togetherand were famously known as the Lads. Oscar Tully was knighted during the Battle of the Kingsroad, the last battle between the Blacks & the Greens,after which the Blacks took control over King’s Landing.