Lubienietski (Latinized LUBIENIECIUS), STANISLAS, of a family greatly distinguished in the Polish Socinian controversy, being the most prominent of five who have become particularly identified with the Socinian movement in Poland, was born at Cracow August 23, 1623. He was minister of a Church at Lublin until driven out by the arm of power for his opinions in 1657, when all anti-Trinitarians were expelled from Poland. He went first to Sweden, and sought the influence of the Swedish monarch for the Unitarians, but was signally disappointed at the conclusion of peace between Sweden and Poland at Oliva. Lubienietski found more favor at the court of the Danes; he was obliged, however, to quit the capital because of his able advocacy of heretical opinions, and the danger to Lutheranism, and he finally settled at Hamburg, where he died May 18, 1675. His death is stated to have been caused by poison — a fact borne out by the death of his two daughters, and the serious illness of his wife, after eating of the same dish; but the Hamburg magistracy neglected to institute the investigation usual in cases of sudden death. His theological works are numerous, and may be found in Sandius, Bibl. Antitrin. (Freist. 1684), with the exception of the Historia Reformationis Polonicae, published in 1685 at Freistadt, with a life prefixed. Of his secular works, his Theatrum Cometicum has a worldwide celebrity. See Engyl. Cyclop. s.v.; Krasinski, Hist. Ref. in Poland, 2, chapter 14; Fock, Der Socinianismus (Kiel, 1847).