found: Pride and prejudice [MP] 1940: credits (screenplay, Jane Murfin)
found: Theatre, film & tv biogs. master index, c1979 (Jane Murfin, d. 1955)
found: Internet Broadway database, Feb. 24, 2010 (Allan Langdon Martin; pseudonym for Jane Cowl and Jane Murfin)
found: Internet movie database, via WWW, Aug. 20, 2012 (Jane Murfin; b. Oct. 27, 1892 in Quincy, Mich.; m. to Laurence Trimble and Donald Crisp (1932-1944); d. Aug. 10, 1955 in Los Angeles, Calif.; screenwriter, dramatist, producer, director)