Overview
At Sword's Point, also known as The Sons of the Three Musketeers, is a 1952 American historical action adventure film directed by Lewis Allen and starring Cornel Wilde and Maureen O'Hara. It was shot in Technicolor by RKO Radio Pictures. The film was completed in 1949, but was not released until 1952.
The Three Musketeers' offsprings of Aramis, Porthos, D'Artagnan and Claire, the daughter of Athos, are reunited by the ageing Queen Anne to halt the villainy of her treacherous nephew, the Duc de Lavalle.
Plot
The sons (and a daughter) of the original Four Musketeers ride to the rescue of besieged Queen Anne in 1648 France.
D'Artagnan and his companions are alerted that the terminally ill Queen (Gladys Cooper) is being pressured by the evil Duc de Lavalle (Robert Douglas) into agreeing to a marriage with Princess Henriette (Nancy Gates). Too old (or dead) to respond, their sons (and one daughter) race to Court to help.
From Wikipedia (CC BY-SA 4.0).