He spent the rest of his long life as a land agent and manager for the settlement of inland Pennsylvania, known for competence, honesty, and care for the settlers.

In 1766, having overcome trumped-up charges of treason, and still facing the severe disadvantages of the penal laws against Catholics, the family moved to France and settled in Poitiers.

In 1788 it was sent to Mauritius; John and William set out on the frigate Penelope, which was wrecked on the Cape of Good Hope with the loss of thirty-six men.

By commission dated 27 November 1791, John was granted the Cross of St. Louis, and shortly afterwards he sailed with the regiment for Saint-Domingue, then in the throes of the Haitian Revolution.

He soon made acquaintance with the French emigre community in Philadelphia, among whom were two who had been included in a large land development scheme started by Robert Morris and John Nicholson.

This Asylum Project attracted French settlers to an agricultural life on the north bank of the Susquehanna River, but most of them preferred in due course to return to France.

[1][2] John was mentioned by De la Rochefoucauld as a man of uncommon merit, distinguished abilities, extraordinary virtue, and invincible disinterestedness.

On 20 January 1795 he became a citizen of the United States, and on 11 December 1797 he married Eulalia Deschapelles, whose father had been a planter in Saint-Domingue until the Haitian Revolution.

He became closely involved with the Ceres Company, which through him purchased 297,428 acres of land in and around modern McKean, Potter, and Clearfield Counties.

"[3] He lived and died a devout Catholic, but his endowments included gifts of land for churches of other denominations, schools, and government buildings.

accessed 11 July 2011 For date of death: http://viaf.org/processed/LC%7Cn%20%2089650142, referring to National Union Catalog of Manuscript Collections data from Penn.