| Person | Type | Job | Role(s) |
|---|---|---|---|
 Alfred Newman | Crew | Sound | Original Music Composer |
 Arthur C. Miller | Crew | Camera | Director of Photography |
 Darryl F. Zanuck | Crew | Production | Producer |
Eugene Grossman | Crew | Sound | Sound |
Guy Pearce | Crew | Costume & Make-Up | Makeup Artist |
Gwen Wakeling | Crew | Costume & Make-Up | Costume Design |
James B. Clark | Crew | Editing | Editor |
 John Ford | Crew | Directing | Director |
 Nathan H. Juran | Crew | Art | Art Direction |
 Philip Dunne | Crew | Writing | Screenplay |
Richard Day | Crew | Art | Art Direction |
Roger Heman Sr. | Crew | Sound | Sound |
Thomas Little | Crew | Art | Set Decoration |
Richard Llewellyn | Crew | Writing | Novel |
 Ann E. Todd | Cast | Actress | Ceinwen |
 Anna Lee | Cast | Actress | Bronwyn |
 Arthur Shields | Cast | Actor | Mr. Parry |
 Barry Fitzgerald | Cast | Actor | Cyfartha |
 Donald Crisp | Cast | Actor | Gwilym Morgan |
 Ethel Griffies | Cast | Actress | Mrs. Nicholas |
 Frederick Worlock | Cast | Actor | Dr. Richards |
 Herbert Evans | Cast | Actor | Postman (uncredited) |
 Irving Pichel | Cast | Actor | Adult Huw (Voice) |
 Jack Curtis | Cast | Actor | Villager (uncredited) |
 Jack Pennick | Cast | Actor | Mine Superintendent (uncredited) |
James Monks | Cast | Actor | Owen Morgan |
 John Loder | Cast | Actor | Ianto Morgan |
Lionel Pape | Cast | Actor | Evans |
 Marten Lamont | Cast | Actor | Iestyn Evans |
 Mary Field | Cast | Actress | Eve (uncredited) |
 Maureen O'Hara | Cast | Actress | Angharad Morgan |
 Morton Lowry | Cast | Actor | Mr. Jonas |
 Patric Knowles | Cast | Actor | Ivor Morgan |
 Rhys Williams | Cast | Actor | Dai Bando |
 Richard Fraser | Cast | Actor | Davy Morgan |
 Robert B. Williams | Cast | Actor | Minor Role (uncredited) |
 Roddy McDowall | Cast | Actor | Huw Morgan |
 Sara Allgood | Cast | Actress | Beth Morgan |
 Walter Pidgeon | Cast | Actor | Mr. Gruffydd |
Evan S. Evans | Cast | Gwilym Morgan Jr. | |
| Person | Type | Job | Role(s) |
