I am looking for information on the Eising family from Detroit, MI. Here is what I know:

Henrietta Eising was born on 17 Sep 1865 in Germany - I don't have her date of Death.
Her parents were Fred Eising born May 1831 in Germany and Louisa Lang (no information other than she died before 1900).

Henrietta came to the United States in 1881 and her father came in 1884. I got this from the 1900 Census report.

Henrietta married John Witte on 8 Jan 1889 in Spingville, MI. They had the following children:
Otto Witte b. 15 Nov 1891 - d. Oct 1974 Oakland, MI
Clara Witte b. 17 Jun 1890 d. 14 Sep 1891 Detroit, MI
August Witte b. 6 Mar 1893 d. 2 Apr 1940 Detroit, MI
John Witte b. 14 Sep 1894 according to Minnie Witte
Gersch's Bible - I don't have any other info
Minnie (Wilhelmina) Bertha Witte-Gersch b. 17 Mar 1897
d. 11 Jun 1989
Edward Witte b. 17 Jun 1898 d. Apr 1964 Michigan

John, Henrietta's husband died on 20 Nov 1903 and Henrietta then married Herman Hartwig on 8 Jun 1910 in Detroit, MI.

The information I am looking for is the following:

Fred Eising's date of death.
Louisa Lang-Eising's date of birth and death.
Henrietta Eising-Witte's date of death.
Other children of Fred and Louisa Eising.

Of course if you can tell me anything else on this family, it would be a great help.