Johann Wilhelm, Elector Palatine
According to Jan van Gool he was an avid gardener and his love of flowers made him become a pupil of Constantijn Netscher so that he could paint the flowers and other plants in his garden. He travelled to Düsseldorf in 1716 and received a gold chain and medal from Johann Wilhelm, Elector Palatine for his work. He had high hopes of painting more for the elector, but his patron died the same year, so Coenraet returned to the Netherlands. On his return, he became a member of the Confrerie Pictura in 1718 and was very successful in The Hague, receiving as much as 1,000 guilders for a work, but was later eclipsed by the flower painter Jan van Huysum.