Dutch painter of German origin. Almost everything known of his life is based on an inscription on a single engraved portraitGLOSSARYThe Roman portrait bust survived in the form of life-sized reliquaries of saints, but it was in 15th century Florence that the individual features and character of a contemporary sitter were accurately recorded by sculptors such as Donatello, Desiderio da Settignano, Mino da Fiesole and the Rossellino. A similar degree of realism occurs in 15th century tomb sculpture. The equestrian portrait, based on antique statues such as the Marcus Aurelius monument (Rome, Campidoglio), was revived in the 14th century. Two examples in fresco are Simone Martini's Guidoriccio (c. 1328; Siena, Palazzo Pubblico) and the posthumous portrait of Sir John Hawkwood (1436; Florence, Cathedral) by Uccello, which gives the illusion of a 3-dimensional statue seen from below. The Venetian Republic ordered imposing monuments from Donatello (1447; Gattarnelata, Padua) and Verrocchio (14799; Colleoni, Venice), whilst other statesmen ordered their own images to be erected in public places, directly relating themselves to the military heroes of ancient Rome. Another form of political portraiture derived from antiquity was the commemorative portrait medal designed by artists such as Pisanello. The carved or painted profile portrait became popular in the 1450s. The realism of the clear, flattened image, painted under the influence of Flemish examples by the Pollaiuolo brothers, Piero della Francesca and Botticelli, was superseded by the three-quarter and frontal portrait, psychologically more complex, such as Leonardo's enigmatic Mona Lisa (Paris, Louvre) with her momentary smile or Andrea del Sarto's arresting Portrait of a Man (London, National Gallery). The 16th century portrait became generalized, Lotto's Andrea Odoni (1527; Royal Collection) being an idealized concept of a collector rather than an individual. Group portraits, decorating whole rooms, include the narrative scenes of the Gonzaga court painted by Mantegna (completed 1474; Mantua, Palazzo Ducale) and the elaborate schemes commissioned by the Farnese family in Rome from Vasari (1546; Palazzo della Cancelleria) and Salviati (after 1553; Palazzo Farnese). Portraits were also incorporated into religious narratives, as in Ghirlandaio's fresco cycle painted for Giovanni Tornabuoni in S. Maria Novella, Florence (1486-90). dated 1642. After initialGLOSSARYthe first letter of the text in medieval manuscripts and early printed books, made to stand out emphatically by its colour, size, and ornamentation. training in Leipzig and elsewhere, in 1630 Knüpfer moved to Utrecht, where he studied with Mannerist painter Abraham Bloemaert. Aside from a possible trip to The Hague in the late 1640s, Knüpfer remained in Utrecht. In 1637 he joined the GuildGLOSSARYAn association of the masters of a particular craft, trade or profession (painters, goldsmiths, surgeons, and so on) set up to protect its members' rights and interests. Such guilds existed in virtually every European city in the 16th century. The guild also monitored standards of work, acted as a court for those who brought their trade into disrepute, and provided assistance to members in need. of Saint Luke, married, and received an important royal commission for three battle scenes, now lost. He painted a few genreGLOSSARYIn a broad sense, the term is used to mean a particular branch or category of art; landscape and portraiture, for example, are genres of painting, and the essay and the short story are genres of literature. scenes and portraits but concentrated primarily on small-scale history paintings.
The rederijker theater, the local rhetoricians' guildsGLOSSARYGuilds were essentially associations of masters in particular crafts, trades, or professions. In Italy they go back a long way; there is documentary evidence of guilds in 6th century Naples. In origin they were clubs which observed religious festivals together and attended the funerals of their members, but in time they acquired other functions. Their economic function was to control standards and to enforce the guild's monopoly of particular activities in a particular territory. Their political function was to participate in the government of the city-state. In some cities, notably Florence in the 14th century, only guildsmen were eligible for civic office, thus excluding both noblemen (unless they swallowed their pride and joined, as some did), and unskilled workers like the woolcombers and dyers. In Florence in 1378 these groups demanded the right to form their own guilds, and there were similar movements of protest in Siena and Bologna. Guilds were also patrons of art, commissioning paintings for guildhalls, contributing to the fabric fund of cathedrals and collaborating on collective projects like the statues for Orsanmichele at Florence. The guilds were not equal. In Florence, the 7 'Greater Guilds', including such prestigious occupations as judges and bankers, outranked the 14 'Lesser Guilds', and in general the guild hierarchy was reflected in the order of precedence in processions. The great age of the guilds was the 13th and 14th centuries. The economic recession after 1348 meant fewer opportunities for journeymen to become masters, and greater hostility between master and man. The shift from trade to land in the 15th and 16th centuries meant a decline in the social standing of the crafts. In some towns, such as Brescia and Vicenza, guild membership actually became a disqualification instead of a qualification for municipal office. The guilds lost their independence and became instruments of state control. In 16th century Venice, for example, they were made responsible for supplying oarsmen for the galleys of the state. that put on amateur performances, inspired his work. Knüpfer often created stage-like compositions with flights of steps leading to a dais where a ruler or judge was enthroned. Another source for his compositions was a book called Toneel van de mannelicke achtbaerheyt (The Theater of Manly Respectability), illustrated by Adriaen van de Venne.
Knüpfer specialised in history paintings, producing works based on stories from the Bible, from Greek and Roman history and from mythology. In his own day, Knüpfer enjoyed considerable fame and was frequently commissioned by patrons. Typical of his style is the loose brushwork, the liveliness of the depictions and the rich palette.
Knüpfer's paintings were characterized by sketchy technique and loose brushwork. His warm tones and dramatic chiaroscuroGLOSSARYIn painting, the modelling of form (the creation of a sense of three-dimensionality in objects) through the use of light and shade. The introduction of oil paints in the 15th century, replacing tempera, encouraged the development of chiaroscuro, for oil paint allowed a far greater range and control of tone. The term chiaroscuro is used in particular for the dramatic contrasts of light and dark introduced by Caravaggio. When the contrast of light and dark is strong, chiaroscuro becomes an important element of composition. recall Rembrandt van Rijn's early style. Knüpfer is also thought to have painted the figures in Utrecht artist Jan Both's mythological and biblical scenes. Based on stylistic similarities, Knüpfer was probably Jan Steen's teacher. Knüpfer's influence is evident in the work of Jan Steen.
