John the Oak
From A Wiki of Ice and Fire
|Alias||The First Knight|
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. John is credited with bringing chivalry to Westeros. His descendants became House Oakheart.
- The World of Ice & Fire, The Reach: Garth Greenhand.