Mathew St. Patrick is an American actor best known for his portrayal of Keith Charles on the HBO drama television series Six Feet Under.
He was born and raised in Philadelphia. St. Patrick attended and was on the varsity track team of Olney High School, but graduated in 1986 from Scotland School for Veterans' Children in Scotland, Pennsylvania. The Scotland School for Veterans' Children, founded in 1895, is the last remaining school for children of veterans in the United States. After graduating from high school, St. Patrick lived in New York and then for 8 years in Chicago. In Chicago, St. Patrick worked as a delivery salesman for Coca Cola, for UPS, for a furniture store and for Union Pacific Railroad. He then in 1994 moved to Los Angeles to get into acting. In Los Angeles, St. Patrick first worked as a personal trainer and in 1996 got properly into acting by joining the West Coast Theater Ensemble.
St. Patrick has starred as Detective Marcus Taggert on General Hospital, and as Adrian Sword on All My Children. He was the first voice of Skulker on Danny Phantom and starred as the principal detective in the Fox fall drama, Reunion. He played Seth in the 2008 science fiction horror film Alien Raiders.