Born on 14 October 1644 to English naval officer Admiral Sir William Penn, young William was raised in a household of privilege and connection to the English crown. His father had served both the Commonwealth under Oliver Cromwell and later the restored monarchy under Charles II, accumulating substantial wealth and royal favour along the way. The elder Penn intended his son to have a life of aristocratic privilege, sending him to Oxford University for an education that befitted a gentleman.
However, William’s life took an unexpected turn in 1667 when he converted to the Religious Society of Friends, commonly known as Quakers. This radical Protestant sect, founded by George Fox in the 1650s, rejected formalised religious ceremonies, believed in the “Inner Light” of Christ within each person, refused to take oaths, and practised pacifism. These beliefs put them at odds with both the Anglican Church and the English government.
Penn’s conversion wasn’t just a spiritual awakening; it was a complete rejection of his father’s ambitions for him. Soon after joining the Quakers, Penn became a vocal advocate for religious freedom, writing numerous pamphlets challenging the religious establishment. His advocacy repeatedly landed him in prison, including a notable stint in the Tower of London in 1668.
European colonisation of North America
By the 1670s, the European colonisation of North America was well underway. The Spanish had established colonies in Florida and the Southwest, while the French were developing settlements along the St. Lawrence River and the Great Lakes. The English had established a string of colonies along the Atlantic seaboard, including Virginia (1607), Massachusetts (1620), Maryland (1634), and the Carolinas (1663).
These colonies served various purposes: some were commercial ventures backed by joint-stock companies seeking profits from natural resources; others were founded as refuges for religious dissenters. The Massachusetts Bay Colony provided a haven for Puritans, Maryland initially offered tolerance to Catholics, and Rhode Island was founded by religious dissenters seeking freedom from Puritan orthodoxy.
The colonial landscape reflected the European powers’ competition for territory, resources, and geopolitical advantage in the New World. This competition often came at the expense of indigenous peoples, whose lands were increasingly encroached upon by European settlers.
Quaker persecution in England
The Quakers faced severe persecution in Restoration England. Their rejection of established church authority, refusal to pay tithes, and unconventional practices—such as allowing women to preach and refusing to remove hats before social superiors—marked them as dangerous radicals in the eyes of authorities.
Legal persecution came through the Conventicles Act, which prohibited religious gatherings outside the Church of England, and the Quaker Act of 1662, which specifically targeted the Friends. Penalties included fines, imprisonment, and property confiscation. Between 1660 and 1685, over 15,000 Quakers were imprisoned in England, and hundreds died in jail.
In this climate of persecution, many Quakers sought refuge in the New World. By the 1670s, small Quaker communities had established themselves in several colonies, though they often faced continued persecution.
The Royal Charter and Penn’s “Holy Experiment”
The circumstances that led to Pennsylvania’s founding were both political and financial. Admiral Penn had loaned King Charles II £16,000, an enormous sum of money at the time. When the elder Penn died in 1670, the debt remained unpaid, and William inherited this financial claim on the crown.
Seeing an opportunity to recover his inheritance and create a haven for his fellow Quakers, Penn petitioned King Charles II in 1680 for a land grant in America instead of the monetary debt. The king who was perpetually short of cash and perhaps seeing an opportunity to remove troublesome dissenters from England, agreed.
On 4 March 1681, King Charles II signed the charter granting Penn a vast province west of the Delaware River and north of Maryland. The king named the territory “Pennsylvania” (Penn’s Woods) in honour of the admiral, despite William’s modest objection. The charter made Penn the world’s largest private landowner, with almost 45,000 square miles under his control.
Penn received extraordinarily broad powers in his charter. As “true and absolute proprietor,” he could establish laws, create towns, and administer justice, though laws required royal approval and appeals to the crown were permitted. Unlike other colonial charters, Penn’s explicitly allowed for the creation of a proprietary colony governed largely according to his vision.
With territory secured, Penn immediately began planning what he called his “Holy Experiment”, a colony that would embody Quaker principles of peace, equality, and religious tolerance. He drafted the First Frame of Government, a constitution for his colony that established a representative assembly and guaranteed religious freedom to all who believed in “One Almighty and Eternal God.”
Establishing the colony

Public domain, via Wikimedia Commons
Penn moved quickly to promote his colony, publishing pamphlets throughout Europe describing the rich lands and freedoms available in Pennsylvania. His promotional literature, translated into German, Dutch, and French, attracted not only English Quakers but also persecuted religious minorities from across Europe, particularly German Pietists.
In 1682, Penn arrived in his colony aboard the ship Welcome, joining the several hundred settlers who had preceded him. He established Philadelphia, the “City of Brotherly Love” at the confluence of the Delaware and Schuylkill Rivers, laying out a grid pattern of wide streets that reflected his orderly vision.
Unlike many colonial proprietors, Penn took seriously the need to establish legitimate relations with the indigenous peoples. He negotiated treaties with the Lenape (Delaware) Indians, famously meeting them under an elm tree at Shackamaxon (now part of Philadelphia). Though romanticised in later accounts, Penn’s approach to Native Americans was notably more respectful than many contemporaries, though still operating within a colonial framework that ultimately displaced native peoples.
Pennsylvania’s governance reflected Penn’s ideals, if imperfectly. The colony offered religious freedom unprecedented in the English colonies, attracting persecuted groups from across Europe. The criminal code was remarkably humane for its time, replacing capital punishment for most crimes with imprisonment and hard labour. Voting rights were extended to all male taxpayers and property owners, regardless of religion.
Challenges and legacy
Penn’s “Holy Experiment” faced numerous challenges. He struggled with the practical governance of his colony, spending only four years there across two visits. Financial difficulties plagued him, as many settlers refused to pay quitrents (annual fees for land use). Political disputes arose between the more democratic assembly and Penn’s appointed governors. Religious tensions occasionally flared between Quakers and other groups.
Penn’s final years were troubled. He returned to England in 1701, facing financial problems and becoming embroiled in disputes with the crown over colonial policies. In 1712, he suffered a debilitating stroke that left him unable to manage his affairs. When he died on 30 July 1718, he was nearly bankrupt, and his sons—who had not embraced Quakerism—inherited control of the colony.
Despite these challenges, Penn’s colony flourished. By 1700, Pennsylvania had nearly 20,000 residents; by the American Revolution, Philadelphia was the largest city in the colonies. The colony became known for its religious pluralism, attracting Quakers, Mennonites, Amish, Lutherans, Reformed Germans, Scots-Irish Presbyterians, and others seeking religious freedom.
Pennsylvania’s political significance extended beyond its borders. The principles of religious freedom, democratic governance, and peaceful resolution of conflicts established by Penn influenced later American political thought. When the Founding Fathers gathered in Philadelphia to draft the Constitution, they did so in a city founded on principles of tolerance and liberty.
William Penn’s legacy lives on in the state that bears his family name and the enduring American ideals of religious freedom and tolerance. Though his “Holy Experiment” faced setbacks and compromises, it demonstrated the possibility of a society built on principles of equality, religious freedom, and peaceful coexistence, principles that should continue to resonate in American political life today.