Sir Rupert Iain Kay Moncreiffe of that Ilk, 11th Baronet,, Chief of Clan Moncreiffe, was a British Officer of Arms, historian and genealogist.
- Occupation
- genealogist, lawyer, military officer, diplomat
- Citizenship
- United Kingdom
- Born
- April 9, 1919, 1919
- Died
- February 27, 1985, 1985