Jeff %22Swampy%22 Marsh

Jeff Swampy Marsh is an American animator associated with several animated television series. Marsh was born in Santa Monica, California, where he grew up with a heavily blended family dynamic. Marsh has been and continues to be a driving force behind several animation projects, working for over six seasons on the animated television series The Simpsons. Marsh continued to work on other animated television series, including King of the Hill and Rockos Modern Life, before moving to England in 1996.

Marsh was born on December 9, 1960, in Santa Monica, California. Marsh was raised in a large and complicated blended family, which included his stepfather Bill. Growing up, he never felt the dynamic was treated in the media coherently enough to make it seem normal, which Marsh felt was unjustified since the majority of his friends were from either divorced or blended familial structures.

Source: Wikipedia