Duchess of Portsmouth in England and Duchesse d'Aubigny in the peerage of France, Louise de Kérouaille was the French mistress of King Charles II. She was known to have great political savvy, though she was the least popular of his mistresses.

From the prominent Kemble theatrical family, Stephen Kemble was a successful theatre manager, actor, and writer.

Popular English actor, theatre manager, and member of the significant Kemble theatrical family. Kemble's popularity dramatically increased in 1785 after acting opposite of his renowned sister, Sarah Siddons, in a production of Shakespeare's Macbeth. As the manager of the Drury Lane and Covent Garden theatres in London, Kemble's innovations led to improvement in the reputation of the theatrical profession.

Daughter of actor and theater manager Charles Kemble and niece to the more famous John Philip Kemble and his elder sister Sarah Siddons, Francis Anne Kemble, better known as Fanny, was nevertheless a reluctant entrant into the profession of acting. She debuted as Shakespeare's Juliet in 1829 largely to help her father recoup his finances as manager of Covent Garden Theatre. Her performances were very well-received, and in subsequent roles she seems to have been equally successful in comic and tragic parts.

A member of the prominent theatrical Kemble family, Charles Kemble was an actor and theatre manager who initiated the practice of historically accurate sets and costuming in stage productions. Kemble was among the most popular of early nineteenth-century actors, and he had several siblings who were also among London's top-tier performers. He was joint proprietor of Covent Garden Theatre. Formally retiring from the stage at the end of 1836, he then served as Examiner of Plays until 1840.

An English dramatist, Kelly is best known for his sentimental comedy, False Delicacy (1768). Also a periodical essayist, Kelly assisted Charlotte Lennox with her popular Lady's Museum (1760-1).

One of the principal figures of the Romantic movement, John Keats belonged to the second generation of Romantic poets, alongside Percy Shelley and Lord Byron. Having received little formal education, Keats was initially apprenticed to a surgeon, and he eventually broke off his apprenticeship to work as a dresser, becoming more involved in the literary realm as he began to dabble in poetry in 1814. By 1817, his literary interests had come to fruition, and he left his position to dedicate himself entirely to poetry.

English tragic actor. Kean's sensational stage celebrity was undermined by his ferocious temper and chronic drunkenness. Kean began his stage career under his mother's supervision while still a child. After quite a few years as a provincial actor, his career was launched in earnest in 1814 with his spellbinding and original portrayal of Shylock in the Drury Lane production of Shakespeare's Merchant of Venice.

Actor, theater manager, and son of the more famous Edmund Kean, with whom Charles sometimes shared the stage. More successful in the provinces than in London, Charles Kean nevertheless appeared at Drury Lane, Covent Garden, and Haymarket theatres, as well as several performances on the American stage.

German philosopher who marked the transition from the Enlightenment to the nineteenth century. His Beobachtungen über das Gefühl des Schönen und Erhabenen (1764) was translated as Observations on the Feeling of the Beautiful and Sublime. Among his major works that followed, the Kritik der reinen Vernunft (1781; translated as Critique of Pure Reason, 1855) established his fame when its ideas were condensed and reformulated in Prolegomena zu einer jeden künftigen Metaphysik (1783; translated as Prolegomena to Every Future Metaphysic, 1819).