On August 8th, 2001 the county offices at Juneau, Dodge county, Wisconsin were visted and searched for Koberstein records, none were found:

Death records: 6 Jan 1881 through 14 Dec 1963, and 8/1/1987 - 3/2/2001

Birth records: 2/28/1867 - 12/51953 and 12/70 - 10/2000 and 1/1/1961 - 8/5/1987

Didn't check marriages because of no Death or Birth records and lack of time.

Found these Wentland deaths.  Wentland relates to Ludwig Koberstein connection to Prussia.
Last name First Sex Death Date Vol Page
Wendtland Christian * M Jun 21, 1900 4 231
Wendtland Benjamin P. M Dec 30, 1913 15 433
Wendland infant M Apr 3, 1915 16 412
Wendlandt Bertha F Mar 27, 1917 18 288
Wendlandt Herbert H. M Sep 25, 1917 18 527
Wendlandt Herald A. M Feb 6, 1921 21 462
Wendlandt Mary A. F Mar 6, 1922 22 419
Wendtland Minna F Jun 21, 1928 27 108
Wendtlandt Adolph A. M Jan 17, 1944 40 248
Wendtland Albert M Dec 4, 1948 45 74
Wentland Ruby Annabell F Dec 13, 1949 46 200
Wendlandt William Arthur M Aug 8, 1955 53 158
Wendlandt Robert Rudolph M Jul 27, 1963 63 200

*  Didn't give father