Hornwood on the Boltons' map in "Kill the Boy".
Map showing the location of Hornwood on the continent of Westeros.
Hornwood is a castle in the North. It is the seat of the eponymous House Hornwood, a vassal house holding fealty to House Stark of Winterfell.
Hornwood is located in forested lands southeast of Winterfell, southwest of the Dreadfort and northeast of White Harbor, near the headwaters of the Broken Branch River.[1][2][3]
In the books
In the A Song of Ice and Fire novels, Hornwood and its lands are located between the Manderlys of White Harbor and the Boltons of the Dreadfort and have been contested between the two in the past. The Hornwoods maintain their independence from both due to their loyalty to the Starks.
References
See also
Hornwood on A Wiki of Ice and Fire (MAJOR spoilers from the books)
Template:The North