Wolfgang Schaeffer is an American actor. He is best known for playing the main character Lincoln Loud in the Nickelodeon comedy television series The Really Loud House as well as its two films A Loud House Christmas and A Really Haunted Loud House. Wolfgang Schaeffer is an American actor. He is best known for playing the main character Lincoln Loud in the Nickelodeon comedy television series The Really Loud House as well as its two films A Loud House Christmas and A Really Haunted Loud House.