Topic of this thesis is the development of disinheritance in historical-comparative law perspective. The starting point is the Roman law, whose main sources of law represented the Twelve Tables. Close relatives could be ignored and disinherited because of the freedom to testify. To avoid this, modifications developed gradually on testamentary freedom. To these developments, the focus is placed in the work.First, the epochs of ancient Rome, the Preclassic, the Classic, and the post-classical law were treated. Some important innovations were introduced under Justinian.In the chapter on the development of disinheritance in Austria since the reception disinheritance reasons as well as the respective legal consequences constitute the core point. The relevant provisions of the Code Theresianus were discussed.A comparison with the General Law for the Prussian States from 1794 follows. Probably the most important and most comprehensive codification of their time in German language contains detailed rules for disinheritance.After a historical introduction, the development of disinheritance in Austria is illustrated, until finally a brief forecast follows.At least, an insight into the developments of the disinheritance of the German Civil Code and the Swiss Civil Code is given. Some similarities and differences are pointed out here.