"Georg Decker (7 December 1818 – 13 February 1894) was an Austro-Hungarian portrait artist.
Decker was born in Hungary to a German-speaking family, and grew up and made his career in Vienna, where he taught painting as well as working as a portrait and historical artist. Thanks to his teaching, he was sometimes referred to as Herr Professor Georg Decker.
Appointed as a knight of the Order of Franz Joseph, Decker has been called "a renowned portraitist of Vienna´s highest society"." - (en.wikipedia.org 31.01.2020)
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