Lots of information on John Locke

Locke's father, who was also named John Locke, was a country lawyer and clerk to the Justices of the Peace in Chew Magna,[3] who had served as a captain of cavalry for the Parliamentarian forces during the early part of the English Civil War. His mother, Agnes Keene, was a tanner's daughter and reputed to be very beautiful. Both parents were Puritans. Locke was born on 29 August 1632, in a small thatched cottage by the church in Wrington, Somerset, about twelve miles from Bristol. He was baptized the same day. Soon after Locke's birth, the family moved to the market town of Pensford, about seven miles south of Bristol, where Locke grew up in a rural Tudor house in Belluton.
In 1647, Locke was sent to the prestigious Westminster School in London under the sponsorship of Alexander Popham, a member of Parliament and former commander of the younger Locke's father. After completing his studies there, he was admitted to Christ Church, Oxford. The dean of the college at the time was John Owen, vice-chancellor of the university. Although a capable student, Locke was irritated by the undergraduate curriculum of the time. He found the works of modern philosophers, such as René Descartes, more interesting than the classical material taught at the university. Through his friend Richard Lower, whom he knew from the Westminster School, Locke was introduced to medicine and the experimental philosophy being pursued at other universities and in the English Royal Society, of which he eventually became a member.
Locke was awarded a bachelor's degree in 1656 and a master's degree in 1658. He obtained a bachelor of medicine in 1674, having studied medicine extensively during his time at Oxford and worked with such noted scientists and thinkers as Robert Boyle, Thomas Willis, Robert Hooke and Richard Lower. In 1666, he met Lord Anthony Ashley Cooper, 1st Earl of Shaftesbury, who had come to Oxford seeking treatment for a liver infection. Cooper was impressed with Locke and persuaded him to become part of his retinue.
Locke had been looking for a career and in 1667 moved into Shaftesbury's home at Exeter House in London, to serve as Lord Ashley's personal physician. In London, Locke resumed his medical studies under the tutelage of Thomas Sydenham. Sydenham had a major effect on Locke's natural philosophical thinking – an effect that would become evident in the An Essay Concerning Human Understanding.
Locke's medical knowledge was put to the test when Shaftesbury's liver infection became life-threatening. Locke coordinated the advice of several physicians and was probably instrumental in persuading Shaftesbury to undergo an operation (then life-threatening itself) to remove the cyst. Shaftesbury survived and prospered, crediting Locke with saving his life.It was in Shaftesbury's household, during 1671, that the meeting took place, described in the Epistle to the reader of the Essay, which was the genesis of what would later become Essay. Two extant Drafts still survive from this period. It was also during this time that Locke served as Secretary of the Board of Trade and Plantations and Secretary to the Lords and Proprietors of the Carolinas, helping to shape his ideas on international trade and economics.
Shaftesbury, as a founder of the Whig movement, exerted great influence on Locke's political ideas. Locke became involved in politics when Shaftesbury became Lord Chancellor in 1672. Following Shaftesbury's fall from favour in 1675, Locke spent some time travelling across France. He returned to England in 1679 when Shaftesbury's political fortunes took a brief positive turn. Around this time, most likely at Shaftesbury's prompting, Locke composed the bulk of the Two Treatises of Government. Locke wrote the Treatises to defend the Glorious Revolution of 1688, but also to counter the absolutist political philosophy of Sir Robert Filmer and Thomas Hobbes. Though Locke was associated with the influential Whigs, his ideas about natural rights and government are today considered quite revolutionary for that period in English history.
However, Locke fled to the Netherlands, Holland, in 1683, under strong suspicion of involvement in the Rye House Plot (though there is little evidence to suggest that he was directly involved in the scheme). In the Netherlands Locke had time to return to his writing, spending a great deal of time re-working the Essay and composing the Letter on Toleration. Locke did not return home until after the Glorious Revolution. Locke accompanied William of Orange's wife back to England in 1688. The bulk of Locke's publishing took place after his arrival back in England – his aforementioned Essay Concerning Human Understanding, the Two Treatises of Civil Government and A Letter Concerning Toleration all appearing in quick succession upon his return from exile.
Locke's close friend Lady Masham invited him to join her at the Mashams' country house in Essex. Although his time there was marked by variable health from asthma attacks, he nevertheless became an intellectual hero of the Whigs. During this period he discussed matters with such figures as John Dryden and Isaac Newton.
He died in 28 October 1704, and is buried in the churchyard of the village of High Laver,[4] east of Harlow in Essex, where he had lived in the household of Sir Francis Masham since 1691. Locke never married nor had children.
Events that happened during Locke's lifetime include the English Restoration, the Great Plague of London and the Great Fire of London. He did not quite see the Act of Union of 1707, though the thrones of England and Scotland were held by the same monarch throughout his lifetime. Constitutional monarchy and parliamentary democracy were in their infancy during Locke's time. Locke exercised a profound influence on political philosophy, in particular on a classical republicanism and much later on a modern liberalism. Most contemporary libertarians claim him as an influence. He had a strong influence on Voltaire. His arguments concerning liberty and the social contract later influenced the written works of Alexander Hamilton, James Madison, Thomas Jefferson, and other Founding Fathers of the United States. In addition, Locke's views influenced the American and French Revolutions.
But Locke's influence may have been even more profound in the realm of epistemology. Locke redefined subjectivity, or self, and intellectual historians such as Charles Taylor and Jerrold Seigel argue that Locke's Essay Concerning Human Understanding (1690) marks the beginning of the modern conception of the self.[5]

Constitution of Carolina
Appraisals of Locke have often been tied to appraisals of liberalism in general, and also to appraisals of the United States. Detractors note that (in 1671) he was a major investor in the English slave-trade through the Royal Africa Company, as well as through his participation in drafting the Fundamental Constitution of the Carolinas while Shaftesbury's secretary, which established a feudal aristocracy and gave a master absolute power over his slaves. They note that as a secretary to the Council of Trade and Plantations (1673-4) and a member of the Board of Trade (1696-1700) Locke was, in fact, "one of just half a dozen men who created and supervised both the colonies and their iniquitous systems of servitude"[6] Some see his statements on unenclosed property as having justified the displacement of the Native Americans. Because of his opposition to aristocracy and slavery in his major writings, he is accused of hypocrisy, or of caring only for the liberty of English capitalists. Most American liberal scholars reject these criticisms, however, questioning the extent of his impact upon the Fundamental Constitution and his detractors' interpretations of his work in general.

Theory of value and property
Locke uses the word property in both broad and narrow senses. In a broad sense, it covers a wide range of human interests and aspirations; more narrowly, it refers to material goods. He argues that property is a natural right and it is derived from labor.
Locke believed that ownership of property is created by the application of labor. In addition, property precedes government and government cannot "dispose of the estates of the subjects arbitrarily." Karl Marx later critiqued Locke's theory of property in his social theory.