Kennedy appears to be more involved than "just" not observing the curfew for the death of the Lord Mayor of Cork. He appears to have had a revolver, probably supplied by the British, and certainly the IRA believed that he was guiding raids in the village. O'Dempsey was probably collateral damage because he was there at Kennedy's shooting
1882 May 27. Born Borris, Carlow
1901 census at 12 Lower Borris, Carlow . William is not there
1911 census at 12 Lower Borris, Carlow
1921 Jan 13. William P Kennedy clerk employed in stores at Island Bridge Barracks shot in the chest in the Empire Theatre, Carlow
