"Wendel Dietterlin (c.1550–1599), sometimes Wendel Dietterlin the Elder, to distinguish him from his son, was a German mannerist painter, printmaker and architectural theoretician. Most of his paintings are now lost, and he is best known for his treatise on architectural ornament, Architectura, published in its final edition in Nuremberg in 1598." - (en.wikipedia.org 21.12.2021)
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