Question: Who is Georgiana Cavendish, Duchess Of Devonshire's father-in-law?
Sentence (from "Lady Dorothy Macmillan"): Lady Dorothy Evelyn Macmillan( 28 July 1900 – 21 May 1966) was the third daughter of Victor Cavendish, 9th Duke of Devonshire, and Evelyn Cavendish, Duchess of Devonshire.
Relevant evidence: No