Perhaps there were more than one organization with (coincidently or not) the same name and similar aspirations. The Fenian forces that advanced on Ridgeway (Ontario) on 2 June 1866 were designated as the 7th (New York), 13th(Tennessee), 17th(Kentucky) and 18th(Ohio) Irish Republican Army regiments, and their colors (as shown in a painting dating from 1869) were a golden harp on a green field, with the letters "IRA" in gold above the harp.