|Died||At King's Landing|
|Book(s)||A Clash of Kings (mentioned)|
Jeffory Mallister was a member of House Mallister.
When news of Lyanna Stark's kidnapping by Rhaegar Targaryen reached her brother, Brandon Stark, he raced to King's Landing accompanied by his party, which included Jeffory. Brandon and his party rode into the Red Keep demanding Rhaegar's head. Rhaegar's father, King Aerys II Targaryen, had them arrested and demanded that their fathers come to King's Landing to answer for their sons' crimes. Aerys had all of them killed save for Ethan Glover.