The House of Thynn is a noble family in the fictional universe of Game of Thrones, created by George R.R. Martin. They are known for their strong ties to the Riverlands and their allegiance to the Tully family. The house's sigil features a silver tree on a green field, symbolizing their connection to nature and the land. Members of the House of Thynn have played various roles throughout the series, often involved in the political intrigues of the Seven Kingdoms. Their history is marked by loyalty and conflict, reflecting the turbulent times of the War of the Five Kings.