The emphatic remarks at the beginning about the need for a crown prince to abandon a life of frivolity and settle down and be serious clearly allude to the Abdication Crisis in Great Britain, which was happening at that time.
Not knowing the conspirators' names, the prince introduces them as Mlle. Corday and M. Danton. Danton was a French revolutionary, and Charlotte Corday assassinated another, Marat.
Both David Holt (as Florizel as a child) and Virginia Weidler (as Miss Vandeleur as a child) are listed in the cast in some contemporary reviews, but they did not appear in the viewed print. However, they do appear in the film's trailer. Their scenes were cut just before the official opening date as they are are credited in some of those reviews.
The film's trailer refers to Rosalind Russell as the woman with "violet eyes," although her eyes were actually dark brown. But in fiction, if someone is said to have "violet eyes" it means that they are mysterious and somewhat mischievous.
This film received its initial telecast in Philadelphia Monday 13 January 1958 on WFIL (Channel 6), followed by Los Angeles 27 April 1958 on KTTV (Channel 11), by New York City 6 August 1959 on WCBS (Channel 2), and by San Francisco 16 March 1960 on KGO (Channel 7).