Cora:
This may be a duplicate reply, but I am not sure if first response got posted or not.
Your grandfather Charles Frederick William Kothenbeutel (b 1878) is the son of August Kothenbeutel (b 1853; d 1925) and Martha Stahl (d 1907). August Kothenbeutel is one of twelve children born to William Karl Kothenbeutel (b 1810; d 1879) and Hannah Winters (b. 1820; d 1889).
William Karl Kothenbeutel is the son of August Kothenbeutel (b 1784; d 1840) and Martha Struck.
August Kothenbeutel is the son of William August Kothenbeutel (b 1757; d 1807)

I am a direct Kothenbeutel descendant. Please contact me for more details.