FOUND-AUGUST KNOPF of PRUSSIA Liv COOK CO., IL.
I'm not related but have this info to share:
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1880 US Census, Chicago, Cook Co., Illinois
FHL Film 1254196..National Archives Film T(-0196..Page 333A
KNOPF, August......Laborer.....Self.....White....Age 43.....PRUSSIA..PRUSS..PRUSS
Louise.....Keeps House.....Wife.....White.....Age 48....PRUSSIA..PRUSS..PRUSS
Charles....Works Grocery Clerk.....Son....Single...White....Age 18....PRUSSIA..PRUSS..PRUSS
August.....Mattresses......Son....Single...White...Age 16....PRUSSIA..PRUSS
Bertha.....At Home.....Dau.....Single....White....Age 14....PRUSSIA..PRUSS..PRUSS
Louis.......At School.....Son.....Single...White...Age 12...IL..PRUSS..PRUSS
Ida...............Dau.....White.....Age 4.....IL..PRUSS..PRUSS
William........Son......White.....Age 2.....IL..PRUSS..PRUSS
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Barbie