Aertsen, Pieter (b. 1508-09, Amsterdam, d. 1575, Amsterdam). Netherlandish painter, active in his native Amsterdam and in Antwerp. A pioneer of still life and genre painting, he is best known for scenes that at first glance look like pure examples of these types, but which in fact have a religious scene incorporated in them (Butcher's Stall with the Flight into Egypt, University of Uppsala, 1551). His depictions of food, flowers, and everyday objects make him important in the development of still-life painting. Aertsen was the head of a long dynasty of painters, of whom the most talented was his nephew and pupil Joachim Bueckelaer.