Around 1630, oil/canvas, 64,5 x 48 cm, rest., relined. - Expertise: Justus Müller-Hofstede, Bonn 17.3.1979. - Dutch portrait painter and architect, son and pupil of the architect Hendrick de K. Besides painting K. traded in basalt stones; in 1662 he became municipal architect of Amsterdam. K. is the best portrait painter of his times besides F. Hals and Rembrandt, the influence of which becomes traceable in K.'s works since the 1630s. K. normally painted small-scale single portraits but also group portraits and depictions of persons on horseback, sporadically biblical subjects. Mus.: Amsterdam (Rijksmus.), Moscow, Copenhagen a. others. Lit.: Thieme-Becker, Bénézit, Bernt a. others.