Assassination of Renly Baratheon

The Assassination of Renly Baratheon was an event during the War of the Five Kings. It was the direct result of the failed meeting between claimants to the Iron Throne Stannis Baratheon and Renly Baratheon, his younger brother.

Background
Following the death of Robert Baratheon, his two brothers, Stannis and Renly, claimed the Iron Throne for themselves, as they knew Robert's official heir, Joffrey Baratheon, was not actually Robert's son but a bastard born of incest between Queen Cersei and her twin brother, Ser Jaime Lannister.

Stannis Baratheon, from his seat in the island of Dragonstone, claimed the throne as Robert's legitimate heir by right of birth, with the sole support of the lords of the Narrow Sea, houses sworn to Dragonstone. Renly Baratheon, from the ancestral seat of House Baratheon, Storm's End, also declared himself King of Westeros with the support of House Tyrell as well as the Stormlords, vassals to House Baratheon.

The Parley
Knowing his numbers were vastly inferior, Stannis set sail to Storm's End to demand the allegiance of his younger brother and the Stormlords. Renly, however, refused to bend the knee, citing the vastly superior numbers of his army and the fact that no lord wanted Stannis as King.

Catelyn Stark, who had been sent by Robb Stark to discuss an alliance between Houses Stark and Baratheon against Lannister and King Joffrey, attempted to make peace between the brothers and remind them of their common foe but was unheeded by both would-be kings.

Stannis offered to make Renly his heir and reinstate him as Master of Laws in the small council. He gave her one night to consider his decision.