challenge: Who was living at 4 Cheyne Walk in 1851?
  
  A. Sir John Goss, his wife, two children, and a servant
  B. Sir John Goss, his wife, three children, and a cousin
  C. Sir John Goss, his wife, five children, sister-in-law, and two servants
  D. Sir John Goss, his wife, and a niece
  Answer: 