Photo: Metropolitan Police"The Fenians were 19th Century Irish Nationalists organised in 1858 as the Irish Republican Brotherhood in Ireland, and in 1867 as the Clan na Gael in the US. The name derives from old Irish 'Fianna', legendary Irish warriors whose name became an Irish term for soldiers. Their activities included the Clerkenwell Bombing in 1867, in which 12 people were killed and 126 injured as the Fenians attempted to rescue two of their members." - Metropolitan Police web site
