Heinrich Hoffmann (June 13 1809 in Frankfurt am Main - September 20 1894 in Frankfurt am Main) was a German psychiatrist, who also wrote some short works including Der Struwwelpeter (German for either "slovenly Peter" or "shock-haired Peter"), an illustrated book portraying children misbehaving.
He wrote under the following names:
In Frankfurt/Germany there is a Heinrich-Hoffmann-Museum Frankfurt
Hoffmann studied medicine in Heidelberg. From 1851, he was director of the municipal psychiatry in Frankfurt.
He is the subject of the historical novel, 98 Reasons for Being.
He is mentioned in The Office episode "Take Your Daughter to Work Day".