"Johann Georg Ziesenis (1716, Copenhagen – 4 March 1776, Hannover) was a German – Danish portrait painter." - (en.wikipedia.org 21.03.2020)
Also known as: Zisenis, Johann Georg; Ziesenis, J. G.; Diesenis, J. G. Liesenis, J. G.; Ziesenis, Johann G.; Ziesenis, C.F