Katharine Margaret Alice Macmillan, Viscountess Macmillan of Ovenden, was the daughter of the 4th Baron Harlech, granddaughter of the 4th Marquess of Salisbury, great-granddaughter of the 10th Marquess of Huntly and daughter-in-law of Prime Minister Harold Macmillan, 1st Earl of Stockton.
- Occupation
- politician
- Position held
- deputy chairperson
- Citizenship
- United Kingdom, United Kingdom of Great Britain and Ireland
- Born
- January 4, 1921