Siebenkäs is the first great marriage novel in German literature and also introduced the first “Doppelgänger” with the characters Siebenkäs/Leibgeber. The edition presents Jean Paul’s two authorized printed versions of 1796–7 and 1818 in a side-by-side comparison. The commentary volume will include, among others, the unpublished preliminary manuscripts to both editions of the novel as well as a commentary on the genesis of the texts.