William Theodore Mueller is an American professional wrestler, better known by his ring name, Trevor Murdoch. He is currently signed to the National Wrestling Alliance where he is a former NWA National Heavyweight Champion and NWA Worlds Heavyweight Champion. Murdoch is best known for his appearances with WWE from 2005 to 2008. He is also known for his appearances in Extreme Championship Wrestling and NWA Total Nonstop Action as Stan Dupp (a member of The Dupps) and Jethro Holliday.