Sometimes credited as Frank Morgan Cavett. Born in Jackson, OH; educated at Ohio University and Yale. Entered films in 1929 as an assistant director. As a screenwriter, mostly in collaboration, his credits include VARSITY STREET (1932), FORSAKING ALL OTHERS (1934, from his play), CORNET OVER BROADWAY (1938), RULERS OF THE SEA (1939), TOM BROWN'S SCHOOL DAYS and SECOND CHORUS (also ass't director) (both 1940), SYNCOPATION (1942), GOING MY WAY (1944), THE CORN IS GREEN (1945), SMASH-UP: THE STORY OF A WOMAN (1947), ACROSS THE WIDE MISSOURI (1951), and his last film, THE GREATEST SHOW ON EARTH (1952).  Writing (Screenplay) 1944: GOING MY WAY (w. Frank Butler)  Nominated for Writing (Original Story) 1947: SMASH-UP, THE STORY OF A WOMAN (w. Dorothy Parker)  Writing (Motion Picture Story) 1952: THE GREATEST SHOW ON EARTH (w. Frederic M. Frank & Theodore St. John) 3 nominations, 2 Awards