House Reed of Greywater Watch is a noble house from Greywater Watch, and one of the principal families in the north. They rule the crannogmen, small men who live in swamps and marshes in the Neck.
Their arms are a black lizard-lion on grey-green. The Reeds first swore their oaths of fealty to House Stark when the Starks were Kings in the North, thousands of years ago.