Painterly in the context of "John Singer Sargent"

Heinrich Wölfflin (German: [ˈhaɪnʁɪç ˈvœlflɪn]; 21 June 1864 – 19 July 1945) was a Swiss art historian, esthetician and educator, whose objective classifying principles ("painterly" vs. "linear" and the like) were influential in the development of formal analysis in art history in the early 20th century. He taught at Basel, Berlin and Munich in the generation that saw German art history's rise to pre-eminence. His three most important books, still consulted, are Renaissance und Barock (1888), Die Klassische Kunst (1898, "Classic Art"), and Kunstgeschichtliche Grundbegriffe (1915, "Principles of Art History").

Wölfflin taught at Berlin University from 1901 to 1912, at Munich University from 1912 to 1924, and at University of Zurich from 1924 until his retirement.

Mark Rothko (/ˈrɒθkoʊ/ ROTH-koh; Markus Yakovlevich Rothkowitz until 1940; September 25, 1903 – February 25, 1970) was an American abstract painter. He is best known for his color field paintings that depicted irregular and painterly rectangular regions of color, which he produced from 1949 to 1970. Although Rothko did not personally subscribe to any one school, he is associated with the American abstract expressionism movement of modern art.

Born to a Jewish family in Daugavpils, Latvia, then part of the Russian Empire, Rothko emigrated with his parents and siblings to the United States, arriving at Ellis Island in late 1913 and originally settling in Portland, Oregon. He moved to New York City in 1923 where his youthful period of artistic production dealt primarily with urban scenery. In response to World War II, Rothko's art entered a transitional phase during the 1940s, where he experimented with mythological themes and Surrealism to express tragedy. Toward the end of the decade, Rothko painted canvases with regions of pure color which he further abstracted into rectangular color forms, the idiom he would use for the rest of his life.

Frans Hals the Elder (UK: /hæls/, US: /hɑːls, hælz, hɑːlz/; Dutch: [frɑns ˈɦɑls]; c. 1582 – 26 August 1666) was a Dutch Golden Age painter. He lived and worked in Haarlem, a city in which the local authority of the day frowned on religious painting in places of worship but citizens liked to decorate their homes with works of art. Hals was highly sought after by wealthy burgher commissioners of individual, married-couple, family, and institutional-group portraits. He also painted tronies for the general market.

There were two quite distinct schools of portraiture in 17th-century Haarlem: the neat (represented, for example, by Verspronck); and a looser, more painterly style at which Frans Hals excelled. Some of Hals's portrait work is characterised by a subdued palette, reflecting the politely serious tones of his fashionable clients' wardrobe. In contrast, the personalities he paints are full of life, typically with a friendly glint in the eye or the glimmer of a smile on the lips.