Original sentence: Earlier examples of usage exist, although they appear to relate to his political resolve than to any particular incident.The "Iron Duke", possibly after an incident in 1832 in which he installed metal shutters to prevent rioters breaking windows at Apsley House, although the term may have been made popular by Punch in 1845
Edited sentence: However, earlier examples of usage exist.The "Iron Duke", possibly after an incident in 1832 in which he installed metal shutters to prevent rioters breaking windows at Apsley House