Complex sentence: An actress and muscian, Kathleen got her start on the stage in England and then immigrated to the United States in 1924, upon her marriage to Canadian-born actor Gene Lockhart, to continue to appear on stage and in Hollywood films for almost forty years.
Split into simpler sentences: An actress and muscian, Kathleen got her start on the stage in England and then immigrated to the United States in 1924, upon her marriage to Canadian-born actor Gene Lockhart. She continued to appear on stage and in Hollywood films for almost forty years.