John Thayer
Missionary, convert, first native of New England ordained to the priesthood, b.Boston, Mass., 1755; d. in Limerick, Ireland, 5 February, 1815. His family were among the early Puritan settlers of New England and all during his career he manifested much of their stern unbending character. Educated at Yale, he became a Congregationalist minister and as such served during the Revolutionary War aschaplain of a company organized for the defence of Boston and of which JohnHancock was commander. After the war he wandered over Europe and was inRome when the beggar-saint Benedict Joseph Labre died. An attempt he made to dispute some of the miracles wrought through Blessed Labre's [Editor's note: St. Benedict Joseph Labre was canonized by Pope Leo XIII in 1883] intercessionresulted in Thayer's conversion to the Faith, 25 May, 1783. His own account of this conversion, one of the first of prominent New England Protestants, was printed in 1787 and reissued in several editions in the United States in London, and in Ireland. It was also translated into French and Spanish, and created a great controversial sensation at the time. Ambitious to convert his non-Catholic fellow- countrymen, he then took a theological course under the Sulpicians inParis where he was ordained priest in 1789. He returned to the United States the following year and was put in charge of the newly organized Catholic congregation in Boston but soon failed as a pastor because of his erratic and contentious temper. He left Boston in 1799, and ministered for a very short time atAlexandria, Virginia, whence he went to Kentucky as a missionary. Here he remained for four years, his
zeal, however, not compensating for his lack of policy and his infirmity of temperament. His wandering inclinations carried him across the ocean again in 1803 and he finally settled down in Limerick, Ireland, where he died, locally esteemed as a priest of edifying piety and ascetic life. The remainder of his small private fortune, with some gifts he had collected, he left by will to found a convent in Boston. Inspired by this wish the three daughters of a merchant named James Ryan, with whom he lived in Limerick, emigrated toBoston (1819) and there founded the Ursuline Community, whose convent, MountBenedict, near Bunker Hill, Charlestown, was burned and sacked by an anti-Catholic mob on the night of 11 August, 1834.
from: http://www.newadvent.org/cathen/14556d.htm