Jacaerys Velaryon

The Targaryen civil war between Rhaenyra (the designated heir) and Aegon II (the king's son) divided the kingdom in two: the Blacks and the Greens.

Hunger and the suffering of the people

The battles destroyed fields, crops, and roads—food disappeared and prices skyrocketed.
In King's Landing, when Rhaenyra took the city, the coffers were already empty because the Greens had taken the gold. She had to create new taxes, which infuriated the people.

The Blacks (Rhaenyra's side)

Dragon Knight
Syrax: Rhaenyra Targaryen 👑
Caraxes: Daemon Targaryen (uncle/husband)
Meleys: Rhaenys Targaryen
Vermax: Jacaerys Velaryon (eldest son)
Arrax: Lucerys Velaryon (son)
Tyraxes: Joffrey Velaryon (son)
Vermithor: Hugh the Hammer
Silverwing: Ulf, the White
Seasmoke: Addam Velaryon
Sheepstealer: Nettles
Moondancer: Baela Targaryen
Stormcloud: Aegon the Younger (youngest son)

🟢 The Greens (Aegon II's side)

Dragon Knight
Sunfyre: the Golden Aegon II Targaryen 👑
Vhagar: Aemond Targaryen
Tessarion: The Blue Queen Daeron Targaryen
Dreamfyre: Helaena Targaryen
Morghul: Jaehaera Targaryen
Shrykos: Jaehaerys Targaryen

Rhaenyra lived during the war.

1. Dragonstone — Her main base from the beginning. She was crowned queen there.

Viserys chose Rhaenyra as his heir, meaning Jacaerys would be next in line. But Alicent (the king's wife) and her sons believed Aegon should reign, being the king's son. They felt Jacaerys was "stealing" their right. Their uncles constantly called them "Strongs" (bastards) to humiliate them and say they had no right to the throne. When Aemond claimed the dragon Vhagar, he mocked his brothers, leading to a fight. Lucerys cut out Aemond's eye with a dagger, turning the enmity into true hatred.