William Buchan, 3rd Baron Tweedsmuir British writer and Baron (1916-2008) (1916–2008) Parents Susan Buchan, Baroness Tweedsmuir John Buchan Children Perdita Buchan Charles Buchan Laura Mary Clare Buchan James Buchan Ursula Margaret Bridget Buchan Toby Buchan, 4th Baron Tweedsmuir Alexander Edward Buchan Deborah Charlotte Buchan Siblings John Buchan, 2nd Baron Tweedsmuir Alice Buchan Alastair Francis Buchan Partners Barbara Howard Ensor Sauré Cynthia Mary Tatchell Nesta Irene Crozier