1837 - born St George's, Bloomsbury, Middlesex, son of a clergyman, Joseph Edwards;
by 1841 - attended Collegiate School, St Margaret (East), Leicester
1860s - located at 20 Baker Street, London;
1864 - publication of 'Portraits of Men of Eminence'
c. 1867 - invented the Heliotype modification to the collotype process, published books and stereographs
1871 - lived at 23 Kilburn Square, Willesden, recording his occupation as Heliotyper
1885 - emigrated to the United States