The article is devoted to Barbara Salamiareckaja (?–1595). She was born in the princely family. It is possible to find Her history of life in the archive in Warsaw. Her biography has not been analyzed in the historiography yet. Barbara was married three times. The first husband was Kanstancin Chadkievič. He died soon after marriage. Than Salamiareckaja became Stanislaŭ Davojna’s wife. It was a period of her criminal activity. Salamiareckaja tried to kill her husband and took away his property. She used the gaps in legal system to avoid punishments. Filip Limant helped her greatly than he became her third husband. In the Salamiarecki family, only Barbara distinguished herself by her criminal activity. This case is very unique. Such female crimes were not widespread among the nobility of the Grand Duchy of Lithuania.