David Christian Bernhard Jadownicky
David Christian Bernhard Jadownicky – born in Poland, 1799; Jewish Talmudical School in Berlin, 1813-18; rabbi at Solingen, 1818-20; baptized April, 1821, in Frankfort), to seek the co-operation of the American Society. Jadownicky, arriving November, 1821, laid the letters of the Count von der Recke before the A. S. M. C. J., and was greatly encouraged by the reception he found, but decided not to return to Germany. Frey himself persuaded the young man to prepare himself for the ministry, and thus we find him in 1823 as a student in Princeton, where he tried to form a prayer union for the evangelization of the Jews, but met with little or no success among the students.
source
Minutes of the First Hebrew-Christian Conference of the US 1903