ENHenryk Rzewuski’s (1791–1866) works cannot be a source of knowledge about Polish-Lithuanian Commonwealth’s legal history. The pieces of information given by him have been at times one-sided and deceptive. Nevertheless, they may – if used with a critical approach – provide details on the old jurisprudence in the 19th century and on the praxis of applying the old law under Russian rule. They also can be a research base on the author’s views on the Polish-Lithuanian Commonwealth’s legal and political system, as well as their portrayal in the 19th-century gawęda szlachecka (literary genre associated primarily with noble storytelling, specific to Polish literature of that time). It is also worth continuing the search for – mentioned in Rzewuski’s manuscript – the two-volume Remarks on the Lithuanian Statute w ritten by h is f ather, Adam Wawrzyniec R zewuski and allegedly published in 1782, in Nieśwież. Although there is no certainty whether this work ever existed, it is worth searching for it.