One author of this name wrote a love story about Armand and tubercular courtesan Marguerite. That author of The Lady of the Camellias shares this name with a man who created Villefort and Madame Danglars, whose husband sends a character to the Chateau d'If. That author of this name created a character who appears in The Viscomte of Bragelonne and executes Milady de Winter with the help of Athos, Porthos, and Aramis. For 10 points, give this name 
One author of this name wrote a love story about Armand and tubercular courtesan Marguerite. That author of The Lady of the Camellias shares this name with a man who created Villefort and Madame Danglars, whose husband sends a character to the Chateau d'If. That author of this name created a character who appears in The Viscomte of Bragelonne and executes Milady de Winter with the help of Athos, Porthos, and Aramis. For 10 points, give this name of a father/son author pair, the older of whom wrote The Count of Monte Cristo and The Three Musketeers.
One author of this name wrote a love story about Armand and tubercular courtesan Marguerite.
Alexandre Dumas [pere or fils]