Joan Wedderburn (died 1871) (d. 1871) Parents James Wedderburn Isabella Blackburn Children Dunbar Douglas, 6th Earl of Selkirk Lady Isabella Helen Douglas Lady Katherine Jane Douglas Siblings Andrew Wedderburn-Colvile Robert Wedderburn Peter Wedderburn Ogilvy Louisa Wedderburn James Wedderburn Partners Thomas Douglas, 5th Earl of Selkirk