This line is one that I am still working on!
I have tons of information on this surname located on my Kossman(n) site.
Descendants of Xavier Frank Kossmann
1 Xavier Frank Kossmann b: Abt. 1849 in Baden, Germany
+Anna Maria Fessler b: Abt. 1855 in NY
m: Bet. 1865 - 1876
2 Frank Kossmann b: April 17, 1876 in brooklyn , NY
+Theresa Hentschel b: June 27, 1881 in ny
m: October 11, 1903 in brooklyn, NY
3 Leonard Kossman b: Abt. 1904
Number of children: 1
4 Carol Kossman b: Unknown
3 Edward Frank Kossman
b: November 11, 1914 in Queens, NY +Mary "Sophia" Nekoloff
b: January 11, 1922 in Clear Creek, Carbon County, Utah
m: Abt. 1937
had 3 children - two boys and a girl
3 Johnny Kossman b: Abt. 1917
3 Florence Kossman
b: September 20, 1926 in brooklyn or Queens, NY
+Gary Brooks
had 2 sons
2 Leonard Kossmann b: Unknown
2 Lena Kossmann b: Abt. 1874
2 Josephine Kossmann b: August 24, 1875
2 Maggie Kossmann b: Abt. 1879
2 Edward Kossmann b: September 22, 1880
2 Amelia Kossmann b: December 1878
*2nd Wife of Xavier Frank Kossmann:
+Elizabeth b: October 1865 in Germany
m: Bet. 1884 - 1885 Number of children: 3
2 Lizzie Kossmann b: October 1885
2 William Kossmann
2 John Kossmann b: June 1891
If this family could be your family also, PLEASE contact me.