Scores of the followers of Wheelwright and Hutchinson were ordered out of the Massachusetts colony, but before leaving,
a group of them, including Dyer, signed what is sometimes called the
Portsmouth Compact, establishing a non-sectarian civil government upon the universal consent of the inhabitants, with a Christian focus. This document was penned by Dyer, he signing his name and then adding the title "clerk." Planning initially to settle in
New Netherland, the group was persuaded by
Roger Williams to purchase some land of the Indians on the Narragansett Bay. They settled on the north east end of
Aquidneck Island, and established a settlement they called Pocasset, but in 1639 changed the name to
Portsmouth.
William Coddington was elected the first leader of the settlement, and given the Biblical title of Judge. ; Dyer's name appears 11th on the list A year after arriving in Portsmouth there was discord among the leadership of the settlement, and several of the leaders decided to go elsewhere. Dyer was
one of nine men to sign an agreement on 28 April 1639 whereby a new plantation would be formed. The men and their families soon moved to the south end of Aquidneck Island, establishing the settlement of
Newport, once again under the leadership of Coddington. Once established in Newport, Dyer and three others were tasked in June 1639 to proportion the new lands, and within the next year he was assigned 87 acres. In 1640 the two Aquidneck Island towns of Portsmouth and Newport united under a single government, and Dyer was the Secretary for them during the entire period that the island remained under its own authority, from 1640 to 1647.
Roger Williams, who envisioned a union of all four settlements on the Narragansett Bay, went to England to obtain a patent bringing all four towns under one government. Williams was successful in obtaining this document late in 1643, and it was brought from England and read to representatives of the four towns in 1644. Coddington was opposed to the Williams patent and managed to resist union with Providence until 1647 when representatives of the four towns ultimately met and adopted the Williams patent of 1643/4. With all of the Narragansett settlements now under one government, Dyer was elected the General Recorder for the entire colony in 1648. Coddington was unhappy with the consolidated government, and wanted colonial independence for the two island towns, and decided to go to England to present his case to the Colonial Commissioners in
London. In April 1651, the Council of State of England gave Coddington the commission of a separate government for the island of
Aquidneck and for the smaller neighboring island of
Conanicut (later
Jamestown, Rhode Island), with him as governor.
Henry Bull of Newport said that Coddington was welcomed upon his return from England, and that the majority of people accepted him as governor. From 1650 to 1653, most of which time was during the island's separation from Providence, Dyer served as the Attorney General. For reasons that are not clear in existing records, criticism of Coddington arose as soon as he returned with his commission. The venerable
Dr. John Clarke voiced his opposition to the island governor, and he and Dyer were sent to England as agents of the discontents to get the Coddington commission revoked. Simultaneously, the mainland towns of Providence and Warwick sent Roger Williams on a similar errand, and the three men sailed for England in November 1651. Mary Dyer had sailed to England just before the three men departed. Because of recent hostilities between the English and the Dutch, the men did not meet with the Council of State on New England until April 1652. Whether true or not, Coddington was accused of taking sides with the Dutch on matters of colonial trade, and in October 1652 his commission for the island government was revoked. Dyer was the messenger who returned to Rhode Island the following February, bringing the news of the return of the colony to the Williams' Patent of 1643, while his wife remained in England. The reunion of the colony was to take place that spring, but the mainland commissioners refused to come to the island to meet, and the separation of mainland from island was extended for another year. During this interim period,
John Sanford was elected as governor of the island towns, while
Gregory Dexter became president of the mainland towns. In May 1653 Dyer received a commission from the General Assembly in preparation for military action against the Dutch. Captain
John Underhill was selected as Commander in Chief upon the land, and Captain William Dyer became Commander in Chief upon the sea. The following year he had some harsh words for Coddington and Richard Tew, who he accused of making "encroachments upon the highway." In 1655 Dyer's name appears on a list of
freemen from Newport. == Execution of Mary Dyer ==