JABLONSKI, DANIEL ERNST German theologian, was born at Nassenhuben, near Danzig, on Nov. 20, 166o, the son of a Moravian pastor. He studied at Frankfort-on Oder and Oxford, became a preacher at Magdeburg in 1683, and then from i686 to 1691 he was head of the Moravian college at Lissa. He was appointed court preacher at Konigsberg in 1691 by the elector of Brandenburg, Frederick III., and had consider able influence in court circles. In 1693 he became court preacher at Berlin and in 1699 he was consecrated a bishop of the Moravian Church. Jablonski worked hard for union between the Lutherans and the Calvinists the courts of Berlin, Hanover, Brunswick and Gotha were interested in his scheme, and his principal supporter was Leibnitz. His idea appears to have been to form a general
union between the German, the English and the Swiss Protestants. In spite of the failure of negotiations, Jablonski and Leibnitz, however, did not cease to believe in their purpose. Jablonski was one of the founders of the Berlin Academy of Sciences, of which he was president in 1733. He died on May 25, 1741.
Jablonski's son, Paul Ernst Jablonski (1693-1757), was pro fessor of theology and philosophy at Frankfort-on-Oder.