In 1832, Ittenbach became a pupil, at the age of 19, of the Düsseldorf Academy, where he also received private lessons from its president, Schadow. He is associated with the Düsseldorf school of painting. He was a member of the Nazarene movement and associated himself mainly with three of his friends and fellow-students: Karl Müller and Andreas Müller, and Ernst Deger.
In 1832, Ittenbach began studying at the Düsseldorf Academy when he was 19 years old, under the guidance of its president, Schadow. He is known for being associated with the Düsseldorf school of painting. He was a member of the Nazarene movement and collaborated closely with three fellow students: Karl Müller, Andreas Müller, and Ernst Deger.