John Thomas Troy, an Irish Dominican friar who serves as Archbishop of Dublin from 1786 to 1823, is born at Annefield House, near Porterstown, County Dublin on May 10, 1739.

Troy receives his early education at Liffey Street, Dublin. At the age of sixteen he joins the Dominican Order and proceeds to their house of San Clemente at Rome. Historian Edward D’Alton notes that he is “amenable to discipline, diligent in his studies, and talented.” He makes rapid progress, and while still a student is appointed to give lectures in philosophy. Subsequently, he teaches theology and canon law, and finally becomes prior/rector of the convent in 1772.

When Thomas Burke, the Bishop of Ossory, dies in 1776, the priests of the diocese recommend one of their number, Father Molloy, to Rome for the vacant see, and the recommendation is endorsed by many of the Irish bishops. But Troy, who is held in high esteem at Rome, has already been appointed Bishop of Ossory. He is consecrated at Leuven in June 1777 by the nuncio to Flanders, Archbishop (later Cardinal) Ignazio Busca.

Troy arrives at Kilkenny in August 1777 and for the next nine years he Labour a hard for the spiritual interests of his diocese. Maddened by excessive rents and tithes, and harried by grinding tithe-proctors, farmers have banded themselves together in a secret society called the “Whiteboys,” so called from the white smocks the members wear in their nightly raids. They attack landlords, bailiffs, agents, and tithe-proctors, and often commit fearful outrages. Bishop Troy frequently and sternly denounces them, declaring any who join the secret society to be excommunicated. He has no sympathy with oppression, but he had lived long in Rome, and does not fully appreciate the extent of misery in which the poor Catholic masses live.

Troy is ready to condemn all violent efforts for reform, and has no hesitation in denouncing not only all secret societies in Ireland, but also “our American fellow-subjects, seduced by specious notions of liberty.” This makes him unpopular. He is zealous in correcting abuses in his diocese and in promoting education. So well is this recognized at Rome that in 1781, in consequence of some serious troubles which have arisen between the primate and his clergy, Troy is appointed Administrator of Armagh. He holds this office until 1782.

Upon the death of Archbishop John Carpenter of Dublin in 1786, Troy is appointed to succeed him. At Dublin, as at Ossory, he shows his zeal for religion, his sympathy with authority, and his distrust of popular movements, especially when violent means are employed. Though his circular, issued on March 15, 1792, disavowing the authority of any ecclesiastical power to absolve subjects from their allegiance, is believed to influence the concession in that year of the relaxations embodied in Langrishe’s Act, and the extension of the franchise to Roman Catholics in 1793, he declines to associate himself with John Keogh and other Catholic reformers in their demands for further relief.

In early 1798, the French Directory conquers Rome, and establishes the Roman Republic. Its ally in Ireland, the Society of United Irishmen, starts a rebellion in May 1798. Troy issues a sentence of excommunication against all those of his flock who decide to join the rebellion. In a pastoral read in all the churches, he speaks of the clerical organisers of the rebellion as “vile prevaricators and apostates from religion, loyalty, honour, and decorum, degrading their sacred character, and the most criminal and detestable of rebellious and seditious culprits.” Hus action at this time appears to endanger his life. But the influence he has acquired with the government enables him to moderate the repressive measures taken by the authorities. Believing that Catholic emancipation can never be conceded by the Irish parliament, he is one of the most determined supporters of the Union.

In 1799, Troy agrees to accept the veto of government on the appointment of bishops in Ireland, and even when the other bishops, feeling they have been tricked by Pitt and Castlereagh, repudiate the veto, he continues to favour it. However, in 1809, he recommends Daniel Murray be appointed his coadjutor. Murray is an uncompromising opponent of the veto, and while Troy’s coadjutor, makes trips in 1814 and 1815 to Rome concerning the controversy.

In April 1815, Archbishop Troy lays the foundation of St. Mary’s Pro-Cathedral in Marlborough Street, Dublin, but does not live to see it completed. He dies in Dublin on May 11, 1823, at the age of eighty-four. He dies very poor, leaving scarce sufficient to pay for his burial, and is interred in the unfinished St. Mary’s Pro-Cathedral.

In the administration of his diocese and in his private life, Troy is eminently zealous, pious, and charitable. Although his cordial relations with the government expose him to many suspicions and accusations, there is no ground for questioning the integrity of his motives and conduct, which are inspired by his views of the interest of his church. His distrust of revolutionary tendencies in civil affairs is fully aligned with the policy of the Vatican throughout his career. John D’Alton speaks of Troy as “a truly learned and zealous pastor, … a lover and promoter of the most pure Christian morality, vigilant in the discharge of his duty, and devotedly solicitous not only for the spiritual good of those consigned to his charge, but also for the public quiet of the state.”