Chapter 15: late medieval and early renaissance northern europe. Rogier van der weyden and saint luke. Popular of the northern renaissance was oil paintings prepared using the recently perfected medium of oil-based pigments. Luke was the patron saint of artists because legend has it that he painted a portrait of the virgin mary. Saint luke paints mary and her son by using a silverpoint (the same instrument rogier used) Portraiture became a major source of income for flemish artists. Flemish painting aims to record every detail of a scene with loving fidelity to optical appearance. The general european movement toward centralized royal governments began in the 12th century. Art revolutionized through the adoption of rogier van der weyden (oil based pigments as a preferred medium of painting) Development of the 15th century art was the widespread adoption of oil paintings. Produced for private patrons and it was a panel intended for private prayer.