John the Oak
|Alias||The First Knight|
|Book(s)||The World of Ice & Fire (mentioned)|
John the Oak is a legendary son of Garth Greenhand and a giantess. He was a huge man, eight feet tall in some tales, or even ten or twelve in others. Even though chivalry was brought by the Andals millennia later, he's credited with bringing chivalry to Westeros. His descendants became House Oakheart.