Greatjon Umber

Jon Umber, known as Greatjon Umber and the Greatjon, is Lord of the Last Hearth and head of House Umber, a vassal family to the Starks of Winterfell. His eldest son, also named Jon, is called the Smalljon. Jon is a large man, nearly seven feet tall and twice as wide as Hodor. He is heavily muscled and is a formidable warrior with fists as large as hams. Jaime Lannister regards him as one of the strongest living men in Westeros when thinking of who could match him in a fight.