Bartholomaeus Schwartz (latinised to Bartholomaeus Nigrinus) (1595–1646) was pastor of the in Danzig (Gdańsk), Royal Prussia (now Poland). He might be related to (1588, in Kaaden - 1638, in Wittenberg) (de), a German philosopher. The famous poet Martin Opitz, a friend, lodged at pastor Nigrinus' place, while visiting Danzig. Both Opitz and Nigrinus sent recommendation letters along with a Robert Fludd. Fludd was connected to the Rosicrucian movement and the Danzig edition of the Rosicrucian Manifestos was printed by the Danzig printer (Huenefeldt or Hunsfeldus) (1609-1652).