Ulf the White

During the Dance of the Dragons Rhaenyra tried to recruit dragonriders to her cause. Among them was a man-at-arms on Dragonstone, the drunken Ulf the White, also known as Ulf White or Ulf the Sot, due to his pale hair and drunkenness. Silverwing, the dragon of Good Queen Alysanne, Rhaenyra's great-grandmother, allowed Ulf to ride her.

Ulf fought at the Battle of the Gullet for the Blacks and was knighted for this. However at the First Battle of Tumbleton he and another dragonrider, Hugh Hammer, defected to the Greens, helping to defeat the Black army. For this they became known as the Two Betrayers.

Rhaenyra's half-brother Aegon II was missing, his children were infants, his next brother Aemond had died in battle withDaemon Targaryen, and the youngest brother Prince Daeron the Daring was still a young man. Hugh said he should be King, his right being a dragon. Ulf meanwhile wanted Highgarden, the Capitol of the Reach, and all its lands. A conspiracy among the Green Commanders, known as the Caltrops, decided to kill the Two Betrayers, Daeron agreeing to the plot. Meanwhile Ulf enjoyed the pleasures of wine and flesh, and those who did not please him were fed to his dragon.

When Addam Velaryon launched the Second Battle of Tumbleton at night, taking the Greens by surprise, Hugh was killed by the Caltrops. Ulf slept beneath a Tavern table through the battle. On hearing Hugh was dead, Ulf made a claim for the throne.

The Caltrop Ser Hobert Hightower pretended to agree to Ulf's claim and brought two casks of wine. Ulf was suspicious of Hobert and asked him to taste the wine. Hobert took a glass of wine, swallowed it all, praised the taste and called for another. Satisfied, Ulf drunk three glasses, and fell asleep. It was a gentle poison, and he died peacefully an hour later. When Ulf lost consciousness, Hobert tried to vomit up the poison, but it was too late and he also perished.