Lee Remick (Jennie, Lady Randolph Churchill) and Thorley Walters (Albert, Prince of Wales) died only four days apart. Remick died on July 2, 1991 whereas Walters died on July 6, 1991.
Lee Remick (Lady Randolph Churchill) is the only actor to appear in all seven episodes of the series. In second place is Barbara Parkins (Leonie Jerome Leslie), who appears in all but the second episode.
The series takes place from 1873 to 1921.
Some of the scenes in the life of Randolph and Winston Church portrayed in "Jennie" had been portrayed in the film "Young Winston" just two years before.
Lee Remick was the second actress to portray Lady Randolph Churchill onscreen, Anne Bancroft's portrayal occurring in Young Winston (1972). Remick and Bancroft had both vied for best actress at The 35th Annual Academy Awards (1963), with Remick (Days of Wine and Roses (1962)) being trumped by Bancroft (The Miracle Worker (1962)).