1890/1900 resided Presque Isle MI 1910 Arbuckle, Colusa Co CA; boarders in the ROBERTS household...don't appear to be related. 1920 Modesto, Stanislaus Co CA; Hannah CHAPMAN 73 lvg with them...Isaac's sis.
1860 Shelby, Macomb MI WARREN Ansel 53 VT; farmer Eliza 47 NY Doran? 22 NY Mary J 21 NY***** John 16 MI Joseph J 4 MI CLOUGH Peter 56 NY; master mason Hannah 50 NY PERRY, Elvira 12 NY
It's possible Isaac is the s/o of Christopher/Maria of Jackson Co MI...not sure, as everyone b NY, and Isaac stateshe was b MI and parents b PA