From Wikipedia, the free encyclopedia. Sean Lawlor (January 25, 1954 – October 10, 2009), was an Irish character actor and playwright. He was best known for his portrayal of Malcolm Wallace in Mel Gibson's Oscar-winning epic, Braveheart. In addition, he also appeared in James Cameron's Titanic and Jim Sheridan's In the Name of the Father. Other recent roles include Martin O Toole in "On Broadway" and Earl Leofric in "1066". Irish television viewers will know him from his role in RTE's 1980's series, "Bracken" as well as parts in many Irish fi…