Jonas Zeuner (1727-1814) was born in Kassel, the capital of Hessen-Kassel in Germany. Little is known about the life of Jonas Zeuner. He arrived in Amsterdam around 1750, although his first known work dates from circa 1770. His oeuvre, of over one hundred and fifty verre eglomises, consists mainly of views of Amsterdam and other Dutch towns, country houses and landscapes. He also made some portraits and battle scenes, these are generally based on drawings and engravings of contemporary artists such as Jan de Beyer (1703-1780) and Wiebrand Hendriks (1744-1831). See also: J. Sprenkels-Ten Horn and A. Sprenkels, Jonas Zeuner 1727-1814, Zijn wereld weerspiegeld in zilver en goud, Abcoude/Amsterdam 1994.
Willem Ruys Jan Danielszoon (1809-1889) born in Ouderkerk aan de Amstel as the son of Jan Daniel Ruys who was clergyman in Ouderkerk. Willem Ruys' birth-place was the house next to the church which can be seen on the present lot.
Willem Ruys is the founder of Ruys & Co. later Stoomboot Reederij Rotterdamsche Lloyd Rotterdam Lloyd. See also: Bram Oosterwijk, Reder in Rotterdam, Willem Ruys 1809-1889, Stichting Historische Publicaties, Rotterdam 1989