A Franciscan friar, Tyrrell was educated in Ireland and the University of Alcalá in Spain. He was ordained in Rome in 1652 or 1653. He undertook further studies at Sant'Isidoro a Capo le Case, Rome before teaching theology in Naples. In 1665 he became vice-secretary-general of the Franciscan Order.[1]
Tyrrell was appointed the Bishop of the Diocese of Clogher by Pope Clement X on 22 April 1676.[2][3][4] His papal brief to the See was dated 13 May 1676 and consecrated on 14 June 1676.[4] Tyrrell was also appointed the vicar apostolic of the Diocese of Kilmore by Pope Innocent XI on either 9 February 1678[5] or 21 March 1678.[2][6] Tyrrell was forced into hiding on the outbreak of the Popish Plot crisis in autumn 1678. He was arrested and imprisoned, but escaped with the collusion of sympathetic gaolers. On 21 October 1680 he was again arrested and charged with high treason, although he was later acquitted.[1]
Fryde, E. B.; Greenway, D. E.; Porter, S.; Roy, I., eds. (1986). Handbook of British Chronology (3rd, reprinted 2003 ed.). Cambridge: Cambridge University Press. ISBN0-521-56350-X.
Moody, T. W.; Martin, F. X.; Byrne, F. J., eds. (1984). Maps, Genealogies, Lists: A Companion to Irish History, Part II. A New History of Ireland. Vol. IX. Oxford: Oxford University Press. ISBN0-19-821745-5.