[Jeremy] Bentham would have been further interested to know that the Great Agitator[Daniel O’Connell] and Purcell O’Gorman, during a tedious journey by canal boat from Dublin, amused themselves firing pistol-shots at the trees on either side.
W J Fitzpatrick ed Correspondence of Daniel O’Connell The Liberator Vol II 1888
O’Connell refused to take part in duels but was said to be an excellent shot. More on Daniel O’Connell and inland waterways here.
Irish waterways history 