biographical article needs additional citations for verification. Please help by adding reliable sources. Contentious material about living persons that is unsourced or poorly sourced must be removed immediately, especially if potentially libelous or harmful. (November 2009) Mark Pellegrino Born April 9, 1965 (1965-04-09) (age 45) Los Angeles, California, United States Mark Ross Pellegrino (born April 9, 1965) is an American actor of film and television. He is best known for his work on Lost as Jacob and for playing Lucifer on Supernatural..