Mary Dyer (born Marie Barrett; c. 1611 – 1 June 1660) was an English and colonial American Puritan-turned-Quaker who was hanged in Boston, Massachusetts Bay Colony, for repeatedly defying a Puritan law banning Quakers from the colony due to their theological expansion of the Puritan concept of a church of individuals regenerated by the Holy Spirit to the idea of the indwelling of the Spirit or the "Light of Christ", which was deemed dangerous heresy. She is one of the four executed Quakers known as the Boston martyrs.
Dyer's birthplace has not been established, but it is known that she was married in London in 1633 to William Dyer, a member of the Fishmongers' Company but a milliner by profession. Mary and William were Puritans who were interested in reforming the Anglican Church from within, without separating from it. As the King of England, Charles I increased pressure on the Puritans; they left England by the thousands to go to New England in the early 1630s. Mary and William arrived in Boston by 1635, joining the Boston Church in December of that year.
Like most members of Boston's church, they soon became involved in the Antinomian Controversy, a theological crisis lasting from 1636 to 1638. Mary and William were strong advocates of Anne Hutchinson and John Wheelwright in the controversy, and as a result, Mary's husband was disenfranchised and disarmed for supporting these "heretics" and also for harboring his own heretical views. Subsequently, they left Massachusetts with many others to establish a new colony on Aquidneck Island (later Rhode Island) in Narraganset Bay.
Before leaving Boston, Mary had given birth to a severely deformed infant that was stillborn. Because of the religious superstitions of the time regarding such a birth, the baby was buried secretly. When the Massachusetts authorities learned of this birth, the ordeal became public, and in the minds of the colony's ministers and magistrates, the monstrous birth was clearly a result of Mary's "monstrous" religious opinions. John Winthrop concluded the birth showed Dyer was a handmaiden of the devil. More than a decade later, in late 1651, Mary Dyer boarded a ship for England, and stayed there for over five years, during which time she converted to Quakerism. Because Quakers were considered among the most dangerous of heretics by the Puritans, Massachusetts enacted several laws against them. When Dyer returned to Boston from England, she was immediately imprisoned and then banished. Defying her order of banishment, she was again banished, this time upon pain of death. Deciding that she would die as a martyr if the anti-Quaker laws were not repealed, Dyer once again returned to Boston and was sent to the gallows in 1659, having the rope around her neck when a reprieve was announced. She returned once more to Boston the following year and was then hanged—the third of four Quaker martyrs.
A statue of Mary Dyer by Sylvia Shaw Judson is installed outside the Massachusetts State House, in Boston, Massachusetts.
Details of the life of Mary Dyer in England are scarce; only her marriage record and a short probate record for her brother have been found. In both of these English records, her name is given as Marie Barret. A belief that Dyer was the daughter of Lady Arbella Stuart and Sir William Seymour was debunked by genealogist G. Andrews Moriarty in 1950. However, Moriarty correctly predicted that despite his work the legend would persist, and in 1994 the tradition was included as being plausible in a published biography of Dyer.
While the parents of Mary Dyer have not been identified, Johan Winsser made a significant discovery concerning a brother of Dyer, which he published in 2004. On 18 January 1634 [O.S. 1633], a probate administration was recorded in the Prerogative Court of Canterbury for a William Barret. The instrument granted administration of Barret's estate "jointly to William Dyer of St Martin-in-the-Fields, fishmonger, and his wife Marie Dyer, otherwise Barret." The fact that the estate of a brother of Mary Dyer would be left in the hands of Mary and her husband strongly suggests that William (and therefore Mary) had no living parents and no living brothers at the time, and also suggests that Mary was either William Barrett's only living sister, or his oldest living sister. The other facts that could be drawn from the instrument are that William Barrett was unmarried and that he died somewhere "beyond the seas" from England.
That Mary was well educated is apparent from the two surviving letters that she wrote. Quaker chronicler George Bishop described her as a "Comely Grave Woman, and of a goodly Personage ... and one of a good Report, having a husband of an Estate, fearing the Lord, and a Mother of Children." The Dutch writer Gerard Croese wrote that she was reputed to be a "person of no mean extract and parentage, of an estate pretty plentiful, of a comely stature and countenance, of a piercing knowledge in many things, of a wonderful sweet and pleasant discourse, so fit for great affairs". Massachusetts Governor John Winthrop described her as being "a very proper and fair woman ... of a very proud spirit, and much addicted to revelations".
Mary was married to William Dyer, a fishmonger and milliner, on 27 October 1633 at the parish church of St Martin-in-the-Fields, in Westminster, Middlesex, now a part of Central London. Mary's husband was baptized in Lincolnshire, England. Settlers from Lincolnshire contributed a disproportionately large percentage of members of the Boston Church in New England, and a disproportionately large part of the leadership during the founding of Rhode Island.
Mary and William Dyer were Puritans, as evidenced by their acceptance into the membership of the Boston church in New England. The Puritans wanted to purify the Church of England from what they considered to be vestiges of Roman Catholicism that were retained after the English Reformation. The conformists in England accepted the Elizabethan via media and English monarch as the titular supreme governor of the state church. The Puritans, as non-conformists, wanted to observe a much simpler form of worship. Some of the non-conformists, such as the Pilgrims, wanted to separate completely from the Church of England. Most Puritans wished to reform the church from within. As exploration of the North American continent was then leading to settlement, many Puritans opted to avoid state sanctions by emigrating to New England to practice their form of religion.
In 1635, Mary and William Dyer sailed from England to New England. Mary was likely pregnant or gave birth during the voyage because on 20 December 1635 their son Samuel was baptized at the Boston church, exactly one week after the Dyers joined the church. William Dyer became a freeman of Boston on 3 March the following year.
During the earliest days of the Boston Church, before the arrival of Mary and William Dyer, there was a single minister, the Reverend John Wilson. In 1633, one of England's most noted Puritan clergymen, John Cotton, arrived in Boston and quickly became the second minister (called "teacher") in Boston's church. In time, the Boston parishioners could sense a theological difference between Wilson and Cotton. Anne Hutchinson, a theologically astute midwife who had the ear of many of the colony's women, became outspoken in support of Cotton, and condemned the theology of Wilson and most of the other ministers in the colony during gatherings, or conventicles, held at her house.
Differing religious opinions within the colony eventually became public debates and erupted into what has traditionally been called the Antinomian Controversy. Many members of Boston's church found Wilson's emphasis on morality, and his doctrine of "evidencing justification by sanctification" (a covenant of works) to be disagreeable. Hutchinson told her followers that Wilson lacked "the seal of the Spirit". Wilson's theological views conformed with those of all of the other ministers in the colony except for Cotton, who instead stressed "the inevitability of God's will" (a covenant of grace). The Boston parishioners had become accustomed to Cotton's doctrines, and some of them began disrupting Wilson's sermons, even finding excuses to leave when Wilson got up to preach or pray.