House Mudd is an extinct noble house of the Riverlands. Their sigil was a golden crown studded with emeralds on a red-brown field.
House Mudd was the last of the First Men families to rule over the Riverlands from their castle at Oldstones (although it had a different name then). Under the rule of King Tristifer IV Mudd, the Mudds resisted attempts by the Andals to overrun the Kingdom of the Rivers and the Hills for many years. Eventually, seven Andal kings united to invade the Riverlands and King Tristifer IV was killed. His son inherited the kingdom as Tristifer V, but did not long survive his father. House Mudd was extinguished and the Andals took possession of the Riverlands.