After his death, Robert's bastards are ordered to be killed by his heir Joffrey Baratheon, Robert's supposed legal heir and the new king; Gendry, subsequently flees the capital.
But Jon Snow, who is actually Aegon Targaryen, does have the best claim to the Iron Throne, according to the “rules.” His actual father, Rhaegar, was Daenerys' older brother. So Jon is the grandson of the Mad King and in the direct line of succession — Rhaegar's siblings are secondary to his children.
But in terms of actual birthright, it was Jon Snow — a.k.a. Aegon Targaryen, the trueborn son of Rhaegar Targaryen and Lyanna Stark — who had the greatest claim to the throne.
Lord Gendry Baratheon, formerly known simply as Gendry, [N 1] is an unacknowledged bastard son of King Robert Baratheon. He has since been legitimized and inherited all titles held by his father before Robert became king, and appointed the new Warden of the South.
Cersei Lannister has a complicated history with children. When Game of Thrones first started, she had three: Joffrey, Myrcella, and Tommen. All were passed off as the legitimate offspring of her husband, King Robert Baratheon, but in fact they were bastards fathered by her twin brother, Jaime Lannister.
He and Cersei had three children: Joffrey, Myrcella, and Tommen. However, unbeknownst to Robert and most of the realm, all three were actually fathered by Cersei's twin brother, Jaime Lannister. On the other hand, Robert had many bastards from other women, including Gendry and Barra.
How Cersei Became Queen After Tommen's Death. Rather than hold a Great Council, like that of the Great Council of Harrenhal in 101 AC, to decide who would succeed Tommen as King of Westeros, Cersei seized the throne herself as a usurper.
This leads to a conclusion that Gendry is the only child & heir of Robert Baratheon & Cersei Baratheon. His name hence being Prince Gendry Baratheon, the true heir to the Iron Throne.
Cersei is a very different woman by the time Tommen dies and had already felt betrayed by her youngest son. Cersei probably didn't feel like there was much for her to mourn. Cersei mourned her sons very differently. Joffrey's death saw her crying, not for a son, but for the loss of the mirror of herself.
Because he isn't a “pure-blood” Targaryen: his mother, Lyanna Stark, has the same dark auburn, almost pure black hair as his, thus explaining, more or less, why his hair isn't Targaryen silver.
In other words, Jon's claim would be stronger than Daenerys' not primarily because of his gender but because his father, Rhaegar Targaryen, was the heir to King Aerys II Targaryen; Jon is the heir of the heir. Daenerys, meanwhile, though she is the only surviving child of the King, is Rhaegar's younger sibling.
After Viserys II Targaryen died of a sudden illness, his eldest son ascended the Iron Throne as Aegon IV, who is remembered in history as "the Unworthy".
The Seven Kingdoms is the name given to the former realm that controlled most of the continent of Westeros and its numerous offshore islands, ruled by the King of the Andals, the Rhoynar, and the First Men from the Red Keep in the city of King's Landing.
Before Aegon the Conqueror, Westeros was made up of independent kingdoms. That's why Robert Baratheon, the first non-Targaryen to be king, wanted Viserys and Daenerys dead. A Targaryen will always have the greatest claim to rule the Seven Kingdoms because they created the position.
In the fourth episode of Game of Thrones' sixth season, King Tommen tells Cersei to beware of the High Sparrow. "There's something I want to tell you, something the High Sparrow told me... I promised him I wouldn't tell anyone.
This family tree traces the Targaryen lineage all the way from Aegon the Conqueror, who had children with both of his sisters, all the way down to Robert, Stannis and Renly Baratheon, all of whom are distantly related to the Targaryens through their grandmother Rhaelle.
Jaime is Tywin's firstborn son. However, he was a member of the Kingsguard, and members of that elite force are forbidden from taking lands, marrying, or fathering children. Remember, Tywin was furious that Jamie couldn't legally inherit Casterly Rock due to his vows, which were for life.
Cersei is the only daughter and the eldest child of Tywin Lannister (portrayed by Charles Dance) and his wife, Joanna; her twin brother, Jaime, was born soon after Cersei. At the beginning of the series, Cersei is 37 years old and has been queen for 17 years (as opposed to 14 in the novels).
King of Westeros is the self-styled title of Stannis Baratheon.
It was during the show-around, trying to win Margery's heart by telling her gruesome stories, Joffrey spoils House of the Dragon for us. In the episode of Game of Thrones, Joffrey says: “Rhaenyra Targaryen was murdered by her brother, or rather his dragon. It ate her while her son watched.
A Game of Thrones
King Robert has come to Winterfell to appoint his close friend Eddard Stark the Hand of The King, after the untimely death of Jon Arryn. He was unaware that Cersei's three children were fathered by her twin brother Jaime.
Due to his frequent whoring, Robert has sired several bastards during his marriage to Cersei, though he has kept them out of sight. According to a prophecy by Maggy the Frog, Robert has fathered sixteen children.