Elliot,
Found the following which I hope may be of some help:
Frederick Knuths b 1832 Macklenburg,Germany, marr Sarah unknown (b 1841 Macklenburg,Germany) 1859 Wisconsin,USA known children:
1) Emma Knuths b1859 Wisconsin
2) Frank H Knuths b July 1860 Wisconsin, died 11/04/1923,Marion,Oregon,USA
3)Henry Knuths b1863 Wisconsin, died 02/03/1929 Plainview,Linn,Oregon,USA
4) Matilda Knuths b1865 Iowa
5) Irving J Knuths b 1869 Iowa
6)Robert W Knuths b Feb 1871 Iowa
7)Dora b 1885 Iowa
Henry Knuths b1863 marr Mary Ann Peterson(b 1873 Iowa, died 07/05/1940 Marion,Oregon,USA) 1905,Linn,Oregon,USA
Child of Henry/Mary
1) William Harold Knuths b1908 Centre,Linn,Oregon,USA, died 17/04/1961, Shedd,Linn,Oregon USA,buried Albany, Linn,Oregon,USA
Irving J Knuths b1869 marr Laura unknown(b1880 Illinois) 1900 Iowa
Children of Irving/Laura
1) Jay Knuths b 30/11/1900 Wright,Iowa,USA,died Dec 1974 Wight,Iowa
2)Dale Knuths b16/05/1912 Wright,Iowa,died July 1973 Iowa
Robert W Knuths b 1885 marr Augusta H Schroder(b Mar 1873 Wisconsin) 1893 Franklin,Iowa
Children Robert/Augusta:
1) Ralph C Knuth b Mar 1895 Franklin,Iowa, died 11/01/1965,Terry,Prarie,Montana
2) Ruth L Knuths b Aug 1899 Franklin,Iowa
Ralph C Knuths b1895 marr Hallie T Goshon(b 04/06/1894 Indiana, died 29/08/1980 Terry,Prarie,Montana)) on 13/11/1922 Fall River,South Dakota.
The primary source I used on this occasion was
www.familysearch.org which is very useful for finding information before 1837 which is when the English records first started.
Sue