1. Walter (Wladyslaw) Siwanowicz (son of Stanislaw Siwanowicz and Marianna Abramski) was born 19 Sep 1874 in Gastkowo, Poland. He died 22 Jul 1945 in Seymour, New Haven County, Connecticut.
Walter Siwanowicz came from Mohowko, Poland to New York 4 Nov 1903 on the SS Rotterdam.
Walter Siwanowicz married Helen Grouss (daughter of Leopold Grouss and Antonina Kobilenski) 13 Aug 1899 in Przasnysz, Poland. Helen Grouss born 4 Mar 1881 in Grudusk, Poland. She died 16 Jun 1963 in Seymour, New Haven County, Connecticut.
Walter Siwanowicz and Helen Grouss had the following children:
2. Hedwig Siwanowicz born in Poland
3. Stanley Siwanowicz (Simanowicz) born 4 May 1900 in Poland
4. Frank Siwanowicz born 4 Oct 1900 in Przanysz, Poland; married Ann Dziadik 25 May, 1927
5. Walter Siwanowicz born in Union City, New Haven County, Connecticut
6. Kazimer Siwanowicz born in Union City, Connecticut
7. Henry Siwanowicz born in Union City Connecticut
8. John Siwanowiz born in Union City, New Haven County, Connecticut
9. Bernard Siwanowicz born in Union City, New Haven County, Connecticut
10. Alexander Thaddeus (Theodore) Siwanowicz born 15 Nov 1908 in Union City, New Haven County, Connecticut; married Agnes Alexander; died 19 Apr 1995
+11. Winifred Agnes Siwanowicz born 23 Mar 1912 in Union City, New Haven County, Connecticut; married Chester Frank Kuzia 25 Sep 1932 Floral Park, Nassau County, New York; died 20 Jun 2004, in Naugatuck, New Haven County, Connecticut
12. Marion Siwanowicz born 17 Jan 1916 in Union City, New Haven County, Connecticut; married Edward Olinsky @1936; died 3 Jun 2007 in Carson City, Carson City County, Nevada
13. Michael Siwanowicz born 8 Dec 1917 in Union City, New Haven County, Connecticut; married Stella Lewicki 26 Oct 1946; died 1 Aug 1989 in Derby, New Haven County, Connecticut
14. Irene Siwanowicz born 27 Sep 1920 in Union City, New Haven County, Connecticut; married Nicholas Smey 5 May 1951
