|Alias||Herrock the Whoreson|
|Title||Lord of Kayce (possibly)|
|Book||The World of Ice & Fire (mentioned)|
Herrock Kenning, known as Herrock the Whoreson, was an ironborn warrior of House Kenning of Harlaw who founded House Kenning of Kayce in the westerlands. His warhorn, the Horn of Herrock, has been passed down by his descendants.
During the wars between the driftwood kings and the Kings of the Rock, Herrock the Whoreson used his horn as a signal for the whores of Kayce to open a postern gate. His men then captured the town for House Lannister of Casterly Rock. Three different ironborn kings attempted to retake the town over the years; Herrock personally killed two of them.