Lady Margaret Erskine (died 1872) (1834–1872) Parents Henry Erskine, 12th Earl of Buchan Elizabeth Harvey Children Siblings Henry Erskine, Lord Cardross David Erskine, 13th Earl of Buchan unknown son Erskine Christian Isabella Erskine Lady Alicia Erskine unknown son Erskine unknown daughter Erskine Partners Sir William Vincent, 12th Bt.