Otto Mengelberg

He was the second son of the portrait painter, Egidius Mengelberg and his wife, Anne Lisette née Risse, of Elberfeld.

Later, he assisted Fay in painting the Elberfeld Town Hall; which is now the Von der Heydt Museum.

In it, he derided the decorations in Catholic churches since the Reformation as "digusting and Jesuitical", and criticized Protestants for being indifferent to the issue.

With the goal of rectifying that situation, he proposed creating an "Association for Religious Art in the Protestant Church".

His best-known students include Peter Nicolai Arbo, Johanne Mathilde Dietrichson, Alexandra Frosterus-Såltin, Erik Johan Löfgren and Victorine Nordenswan.