He was hospitably entertained, and returned to Fort Amsterdam with such testimonials of his reception as induced Director Minuit to send a formal ambassador to Plymouth, entrusted with plenipotentiary powers.

Governor Bradford apologized for not sending an ambassador to Fort Amsterdam, stating, "one of our boats is abroad, and we have much business at home." Director Minuit selected Isaac De Rassieres, secretary of the province, "a man of fair and genteel behavior," as his ambassador.

This movement was, to those infant colonies, an event of as much importance as any of the more stately embassies which have been interchanged between European courts.
The barque Nassau was fitted out, and manned with a small band of soldiers, and some trumpeters.

It was the last of September, 1629, when earth and sky were bathed in all the glories of New England autumnal days.

In De Rassieres' account of the excursion, he writes: "Sailing through Hell-gate, and along the shores of Connecticut and Rhode Island, we arrived, early the next month, off Frenchman's Point, at a small river where those of New Plymouth have a house, made of hewn oak planks, called Aptuxet; where they keep two men, winter and summer, in order to maintain the trade and possession." This Aptuxet was at the head of Buzzard's Bay, upon the site of the present village of Monumet, in the town of Sandwich.