Knowns as Bartholomaeus Nigrinus, Bartholomaeus Schwartz (1595 - 1646) was pastor of the St. Peter and Paul church in Gdańsk, Poland. The famous poet Martin Opitz, a friend, lodged at pastor Nigrinus' place, while visiting Gdańsk. Both Opitz and Nigrinus sent recommendation letters along with a Robert Fludd. Fludd was connected to the Rosicrucian movement and the Gdańsk edition of the Rosicrucian Manifestos was printed by the Gdańsk printer Andreas Huenefeld(t) (Hunsfeldus) (1609 - 1652). Comenius of Bohemia and the pastor Nigrinus had worked in nearby Elbląg on a Bohemia pansophie. After the poet Opitz died, pastor Negrinus with two associates edited the Opitz poems for publishing by Huenefeld.