Letter to Fr Aubrey Gwynn SJ from Matthew J. Byrne, Kerry (brother of Frs. George and William Byrne SJ), relating some incidents which occurred during the era of the Penal Laws. Includes information on a ‘penal law Altar preserved in a house at Causeway with vestments and altar furniture, all ready for Mass…in a concealed hollow in wall of bedroom of house once occupied by a Fr Neilan.’