John Charles Blackett (1813-1896) (1813–1896) Parents Mary Anne Keene Sir William Blackett, 5th Bt. Children Louisa Blackett Mary Patience Blackett Florence Blackett Ida Frances Blackett John Charles Blackett Edith Blackett unknown daughter Blackett Emily Blackett Evelyn Blackett Arthur Vere Blackett Nesta Mary Blackett Henry Blackett Harold Blackett Siblings William Douglas Blackett Sir Edward Blackett, 6th Bt. Frances Blackett Henry Collingwood Blackett Charles Blackett Maria Patience Blackett Partners Maria Berthon Emily Jane Cockcraft