"Michael Rieser (5 September 1828, in Schlitters – 9 November 1905, in Vienna) was an Austrian painter. He studied at the Academy of Fine Arts, Munich ...
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from 1848 to 1850 under Christian Ruben. After a stay in Rome (1861-1864) he moved to Vienna, and taught at the Kunstgewerbeschule there from 1868 to 1888. His students included Gustav Klimt and Franz von Matsch." - (en.wikipedia.org 15.12.2021)