Mary Spencer-Nairn (born 1931) (b. 1931) Parents Elizabeth Henderson Douglas Spencer-Nairn Children William Robert Houstoun Andrew Neil Houstoun David Waldron Houstoun Alexander Michael Houstoun Siblings John Spencer-Nairn Sir Robert Spencer-Nairn of Monimail, 3rd Baronet Christopher Frank Spencer-Nairn Teresa Leslie Spencer-Nairn Partners Andrew Beatty Houstoun