The House of Blackwood is a noble family from the fictional world of Westeros, created by author George R.R. Martin. They are known for their ancestral seat, Blackwood Hall, located in the Riverlands. The family has a long history and is recognized for their loyalty to the Targaryens during the civil war known as the Dance of the Dragons. The Blackwoods are often in conflict with their rivals, the Brackens, due to territorial disputes. Their sigil features a black tree on a silver field, symbolizing their connection to the ancient weirwood trees found in the region. The family is also known for their skilled archers and strong ties to the Old Gods of the forest.