About Elizabeth Posthuma Simcoe Elizabeth Posthuma Simcoe (1766-1850) was the wife of John Graves Simcoe, the first lieutenant-governor of Upper Canada. Books by Elizabeth Posthuma Simcoe The Voyageur Canadian Biographies 5-Book Bundle The Firebrand / Mrs. Simcoe's Diary / The Scalpel, the Sword / The Men of the Last Frontier / Pilgrims of the Wild by (author) Grey Owl, Sydney Gordon, Mary Quayle Innis, Elizabeth Posthuma Simcoe & William Kilbourn introduction by James Polk, Michael Gnarowski, Julie Allan, Norman Bethune Allan, Susan Ostrovsky & Ronald Stagg foreword by Hugh Eayrs Mrs. Simcoe's Diary edited by Mary Quayle Innis by (author) Elizabeth Posthuma Simcoe