I am looking for Mitchell ancestors and have gotten stuck. I could use whatever help anyone can give me. I am looking for parents of William Mitchell and his wife Missouri. This is what I have on them and their children.

William Mitchell born April 17 1851 in West Virginia married Missouri around 1875. I do not know Missouri's maiden name. Missouri born July 5 1856
Children that I can find:
Dorsey L Mitchell b Aug 6, 1876
Albert D Mitchell b Aug 3, 1877
Mary O Mitchell b Jul 16 1879
Floda Delma Michell b May 1881
Howard J Mitchell b Feb 1886
Fleming G Mitchell b Sep 1890
Percy R Mitchell b May 1894
Daisy B Mitchell b 1Mar 1901

In 1880 census William and Missouri living in Harrison County, WV

In 1900 and 1910 census living in Lewis County, WV

In 1920 census living in Harrison County, Clarksburg, WV. Also, Missouri is listed as widowed.

On Oct 15 1901 Floda Mitchell married Hanson Hugh Duncan in Clarksburg, WV.
Children:
William Hayward Duncan
Ursel A Duncan
Harless Hanson Duncan

If any Mitchell can help I would be grateful. I am having a hard time finding ancestors of William and Missouri.
Thank you.