Descendants of David Genserowski(1816 - 1875)
and his wife Rose Israel4 (died about 1868):

1 David Genserowski born: 1816 in Kalvarija, died: 30 April 1875 in Berlin Germany
... + Rose Israel born: unknown, married: unknown, died: about 1868
......2 Samuel Genserowski born: 27 Feb 1853 in Margotroki, Russia, died: 10 Feb 1917 in Berlin, Germany
......  + Fanny Hirschfeld born: 10 Aug 1849 in Potsdam, Prussia, married: about 1871, died: 24 Jun 1913 in Berlin, Germany
......2 Julius Gens born: 17 May 1856 in Suwalki, Russia, died: 27 Apr 1940 in Lawrence, Essex, Massachusetts
...... + Ida Anna Augusta Markowski born: 17 Aug 1863 in Berlin, Germany, married: 18 Oct 1888 in Lawrence, Essex, Massachusetts, died: 27 Oct 1931 in Lawrence, Essex, Massachusetts
......2 Louis Gens born: 17 Dec 1858 in Kalvarij, Russia, died: 11 Jan 1931 in Lawrence, Essex, Massachusetts
......  + Bertha Anna Josephine Markowski born: 02 Apr 1859 in Germany, married: 05 May 1883 in New York, New York, died: 20 Feb 1899 in Lawrence, Essex, Massachusetts