Family: Major Sir John Sinclair-Wemyss (1st Bt.) Arbuthnot, MP / Margaret Jean Duff (F78324)
m. 3 Jul 1943-
Male
Major Sir John Sinclair-Wemyss (1st Bt.) Arbuthnot, MP
Birth 11 Feb 1912 Death 13 Jun 1992 Burial Marriage 3 Jul 1943 Father Major Kenneth Wyndham Arbuthnot | F78326 Group Sheet Mother Janet Elspeth Sinclair-Wemyss | F78326 Group Sheet
Female
Margaret Jean Duff
Birth 29 Sep 1919 Granville Road, Sevenoaks, Kent, England 
Death Yes, date unknown Burial Father Alexander Gordon Duff | F78325 Group Sheet Mother Janet Macfie Blaikie | F78325 Group Sheet
Male
Sir William Reierson (of Kittybrewster) Arbuthnot, Bt.
Birth 1950 Deal, Kent, England Christening 2 Sep 1951 Crypt, House of Commons, London, england Death 7 Oct 2021 Chelsea and Westminster Hospital, London, England Burial Spouse Tanya Bowyer-Bower | F78322 Marriage Spouse Louise Alexandra Mary Barry | F78323 Marriage 26 Aug 2010 London, England