Henry Blackett (1867-1952) (1867–1952) Parents John Charles Blackett Emily Jane Cockcraft Children Pamela Blackett Siblings Nesta Mary Blackett unknown daughter Blackett Harold Blackett John Charles Blackett Louisa Blackett Evelyn Blackett Arthur Vere Blackett Florence Blackett Emily Blackett Mary Patience Blackett Edith Blackett Ida Frances Blackett Partners Pamela Mary Fisher