Affairs then came to an open rupture between New Netherland and New Sweden. In 1651 Governor Stuyvesant inaugurated a more aggressive policy against the Swedes by building Fort Casimir near what is now New Castle, Delaware, not far from the Swedish fort. Three years later Fort Casimir fell into the hands of the Swedes. The Dutch Government now commanded Stuyvesant to drive the Swedes from the river or compel their submission. As a result the Director and his fleet sailed into the Delaware in September, 1655, and captured one fort after another, till Rysing, the last of the Swedish governors, was completely defeated. Though the colonists were promised security in possession of their lands, the power of New Sweden was ended, and the jurisdiction of the Dutch was for a time established.
New Netherland had, however, other neighbors more powerful, more persistent, and with more at stake than the French, the Indians, and the Swedes. These were the English colonists, pressing northward from the Virginias and southward from New England. From the beginning of the Dutch colonization, England had looked askance at the wedge thus driven between her own settlements. She had stubbornly refused to recognize the sovereignty of the States-General in the region of New Netherland while at the same time she vainly sought a pretext for the establishment of her own. England put forward the apocryphal claim of discovery by Cabot; but here she was stopped by the doctrine announced in a previous century that in order to give title to a new country, discovery must be followed by occupation. When England maintained that, since Hudson was an Englishman, the title to his discovery must pass to his native land, she was reminded that Cabot was a Genoese, and that Genoa might as well claim title to Virginia as England to New Netherland.
The Plymouth Company particularly was concerned at the Dutch occupation of this middle region to which the charter granted by King James gave it a claim. It formally protested in 1621 against these "Dutch intruders." Whereupon King James I directed Sir Dudley Carleton, his ambassador at The Hague, to protest against the Dutch settlements; but nothing was accomplished, both parties having their hands too full with European quarrels to carry these transatlantic matters to extremities. The tension, however, was constantly increased on both sides by a series of encroachments and provocations.
In April, 1633, for example, the ship William arrived at Fort Amsterdam under command of Captain Trevor, with Jacob Eelkens as supercargo. Eelkens had been dismissed by the West India Company from the post of Commissary at Fort Orange, and was now in the service of some London merchants, in whose behalf he had come, as he told the Director, to buy furs on Henry Hudson's River.
"Don't talk to me of Henry Hudson's River!" replied Van Twiller, "it is the River Mauritius." He then called for the commission of Eelkens, who refused to show it, saying that he was within the dominions of the English King, and a servant of His Majesty, and asking the Dutch Council what commission they themselves had to plant in the English dominion. Whereupon Van Twiller replied that it was not fitting that Eelkens should proceed up the river, as the whole of that country belonged to the Prince of Orange and not to the King of England.
After this exchange of amenities, Eelkens returned to his ship, which remained at anchor for several days. At the end of the time, he presented himself again at the fort to ask if the Director would consent in a friendly way to his going up the river; otherwise, he would proceed if it cost his life. In reply, Van Twiller ordered the Dutch flag to be run up at the fort and three pieces of ordnance fired in honor of the Prince of Orange. Eelkens on his part ordered the English flag to be hoisted on the William and a salute fired in honor of King Charles. Van Twiller warned Eelkens that the course which he was pursuing might cost him his neck; but the supercargo weighed anchor and proceeded calmly on his way.
Van Twiller then assembled all his forces before his door, brought out a cask of wine, filled a bumper, and cried out that those who loved the Prince of Orange and him should follow his example and protect him from the outrages of the Englishman; Eelkens, by this time, was out of sight sailing up the river. The people drank, but only laughed at their governor, and De Vries told him that he had been very foolish. "If it were my affair," he said, "I would have helped him away from the fort with beans from the eight-pounders."
The William, meanwhile, journeyed up the river and Eelkens, who knew the country well, landed with his crew about a mile below Fort Orange and set up a tent where he displayed the wares which he hoped to exchange with the natives for beaver-skins. Very soon reports of this exploit reached the ears of the commissary at Fort Orange, who at once embarked with a trumpeter on a shallop decorated with green boughs. The Dutch landed close beside the English and set up a rival tent; but the Indians preferred to deal with Eelkens, whom they had known years before and who spoke their language.
In the high tide of success, however, Eelkens was rudely ordered to depart by a Dutch officer who had come up the river in charge of three vessels, a pinnace, a caravel, and a hoy. To enforce the commands came soldiery from both Dutch forts, armed with muskets, half-pikes, swords, and other weapons, and ordered Eelkens to strike his flag. They pulled down the tent, sent the goods on board ship, and sounded their trumpets in the boat "in disgrace of the English." The Dutch boarded the William, weighed her anchor, and convoyed her down the river with their fleet, and finally dismissed her at the mouth of the river.
The troubles of the Dutch with their English neighbors, however, did not end with these aggressions on the Hudson and similar acts on the Delaware. In the year 1614, Adriaen Block, a great navigator whose name deserves to rank with that of Hudson, had sailed through the East River, and putting boldly across Long Island Sound, had discovered the Housatonic and Connecticut rivers. He also discovered and gave his own name to Block Island and explored Narragansett Bay, whence he took his course to Cape Cod. These discoveries reported to the States-General of the United Netherlands caused their High Mightinesses at once to lay claim to the new lands; but before they could secure enough colonists to occupy the country, restless pioneers of English stock planted towns in the Connecticut valley, along the Sound, and on the shore of Long Island. These were uncomfortable neighbors with aggressive manners which quite upset the placid Dutch of New Amsterdam. Inevitable boundary disputes followed, which reached no adjustment until, in 1650, Stuyvesant went to Hartford to engage in a conference with commissioners of the United Colonies of New England.