Kinslaying is the act of slaying a family member and a great taboo in the Seven Kingdoms. Whoever commits it is dubbed a kinslayer. Any individual who slays a member of their own family is believed to be cursed forever in the sight of gods and men.
Known and alleged kinslayers
- King Aegon II Targaryen, who fed his sister Rhaenyra Targaryen to his dragon.
- Ser Gregor Clegane, suspected to have murdered his infant sister as well as his father.
- Craster, who sacrifices his male offspring to the White Walkers.
- Daenerys Targaryen stood by and allowed her husband Khal Drogo to execute her brother Viserys by pouring molten gold onto his head. This may not be considered an outright example of kinslaying, as Viserys had drawn a sword and threatened her within the Dothraki holy city of Vaes Dothrak, where drawing a sword is punishable by death (and Daenerys even warned Viserys as much). Thus, Drogo was within his rights to execute Viserys for this violation.
- King Stannis Baratheon, who conceives a shadow assassin with Melisandre to kill his brother Renly.
- Melisandre later insists to Stannis that she must sacrifice King Robert's bastard son Gendry. Stannis is uneasy about this and Davos Seaworth points out why: Gendry is his own nephew and he would be spilling his own blood. Davos concedes that Renly had wronged Stannis, declared himself king ahead of his older brother, stole his rightful bannermen to raise an army, and Renly himself would have killed his brother Stannis when their forces clashed on the battlefield. Renly was no innocent, but Gendry is just an innocent bastard boy. Once Davos verbalizes Stannnis' doubts, he agrees not to kill Gendry as it would be an unlawful kinslaying.
- Ser Jaime Lannister, who murders Alton Lannister, his distant cousin, in his attempt to escape captivity.
- King Robb Stark, is accused of it by Lord Rickard Karstark when the former is about to execute the latter. This was due to the distant blood ties between House Stark and House Karstark, and it is debatable if Robb would be officially labelled a kinslayer as a result.
- Kinslaying at A Wiki of Ice and Fire (MAJOR spoilers from the books)