He owned works by leading Dutch masters that he had mostly inherited, including two works by Maria Sybille Merian now in Teylers Museum. Maria never married, and ordered a small pavilion built on the Kleine Houtweg in Haarlem after a design by Abraham van der Hart. Her art collection filled a gap for visitors left when Henry Hope"s gallery in Villa Welgelegen closed.
His art collection across the park from Maria"s house had been removed to London in 1794.
She died in Haarlem and her collection was sold. According to Adriaan van der Willigen in his Geschiedenis der Vaderlandsche Schilderkunst, her father had two paintings by January Both and Andries Both, and 4 fruit and flower still life paintings by January van Huijsum, 2 landscapes by Meindert Hobbema, 2 by Pieter de Hooch, 2 by Adrian van Ostade and 2 by Isaac van Ostade, 2 portraits by Rembrandt and 3 by January Steen, 2 by David Teniers and 2 by Adriaen van de Velde.
Maria was an artist herself and from 1822 she was an honorary member of the Koninklijke Academie voor Beeldende Kunsten in Amsterdam.