On the Caribbean island of Martinique, Dom Augustin was taken into custody by the British governor, General Charles Wale, on foot of a complaint laid against him by an Irish member of the contingent from the monastery of St Susan at Lulworth, one James Power, who seems to have joined with Jeremiah O'Flynn in a quarrel with the abbot. Dom Augustin was soon released and, after the expulsion of his mission from Martinique, arrived in New York in December 1813. The Jesuits had just abandoned a building which they had in that city, and which they had used for a classical school. The edifice occupied the place where now stands St. Patrick's Cathedral on Fifth Avenue. Dom Augustin purchased the site for the sum of $10,000, and in 1814, on the downfall of Napoleon, returned to France and took possession once more of his former monastery of La Trappe.