Costley, J., Ledwich, W., Frizel, C. F., Joly, J. R., & Ireland. Commission of Oyer and Terminer. (1804). The trial of John Costley, gent. (ensign in the county of Roscommon militia) for conspiring with Charles Frzaer Frizel, Esq., barrister at law, in an intention to murder the Rev. William Ledwich, parish priest of Rathfarnham in the county of Dublin: Held before the Hon. Dennis George, second baron of His Majesty's Court of Exchequer in Ireland, and the Hon. Robert Day, second justice of His Majesty's Court of King's Bench, at the Session House in Green-Streeet on Thursday the 23d of February 1804. Holmes & Charles.

Costley, John, et al. The Trial of John Costley, Gent. (ensign in the County of Roscommon Militia) for Conspiring with Charles Frzaer Frizel, Esq., Barrister at Law, in an Intention to Murder the Rev. William Ledwich, Parish Priest of Rathfarnham in the County of Dublin: Held Before the Hon. Dennis George, Second Baron of His Majesty's Court of Exchequer in Ireland, and the Hon. Robert Day, Second Justice of His Majesty's Court of King's Bench, at the Session House in Green-Streeet on Thursday the 23d of February 1804. Holmes & Charles, 1804.