Jacob B Knowlton is 57 in 1900 Sheffield village, Bureau county, IL. He was born in NY, his parents in PA & NY. His wife is Marian M [Cooper], 57. She was born in IN, her parents in VT and CT. Also in the household is Clara Knowlton, 25, born IL. Jacob is in Bureau county from 1870 through 1900, living with the same wife & by 1880 4 children. One child has died by 1 June 1900.