The Manchester Martyrs - William Philip Allen, Michael Larkin, and Michael O'Brien - were members of the Irish Republican Brotherhood, an organisation dedicated to ending British rule in Ireland. On 22 November 1867 they were hanged at Salford Gaol for the murder of a police officer during an incident earlier that year that had become known as the Manchester Outrages. The three men were members of a group of thirty or forty Fenians who attacked a horse-drawn police van transporting two of their leaders to another jail. Police Sergeant Charles Brett, travelling inside with the keys, was shot and killed by the attackers.
Photographer unidentified.
A small printed label pasted to the reverse of the mount identifies the Dublin stockist where the carte was originally purchased.