According to a TCM narrative, "Come to the Stable" is based on the founding of the Abbey of Regina Laudis in Bethlehem, Conn., which was founded in 1947 by Mother Benedict Duss, O.S.B. and Mother Mary Aline Trilles de Warren, O.S.B. of the Benedictine Abbey of Notre Dame de Jouarre in France.
One-time Hollywood actress, Dolores Hart, entered the convent in 1963, later becoming Abbess. Partly because of her acting background, the abbey now sponsors annual summer theatre productions.
In 1950 Fox announced plans for a sequel called "A Spark in the Night" that would reunite Loretta Young and Celeste Holm as nuns toiling in the aftermath of the Hiroshima bombing, but it was never filmed.
The character of Amelia Potts played by Elsa Lanchester is based on religious artist Lauren Ford (1891 - 1973) who lived and worked in Bethlehem, CT and helped in the founding of the Abbey of Regina Laudis.
The character of the music critic Al Newman, played by Louis Jean Heydt, is named after Alfred Newman, long the head of 20th Century-Fox's music department, who also co-wrote the song "Through a Long and Sleepless Night" for this film.
"Lux Radio Theater" broadcast a 60-minute radio adaptation of the movie on April 3, 1950 with Loretta Young and Hugh Marlowe reprising their film roles.