Complex sentence: Cornelis (top left) became a still life painter, Rochus (between Cornelis and his father) a portrait painter like his father, and Willem (lower left), who married a daughter of Michiel Jansz van Mierevelt and became a renowned engraver.
Split into simpler sentences: Cornelis (top left in the portrait) became a still life painter, while Rochus (between Cornelis and his father) became a portrait painter like his father. Willem married a daughter of Michiel Jansz van Mierevelt and became a renowned engraver.