In the 1870 Census for IN, the following Jacob Miller's are listed giving their birthplace as Ohio.
Miller, Jacob; age 64; Warren Co. Miller, Jacob; age 54; Elkhart Co. Miller, Jacob; age 53; Miami Co. Miller, Jacob; age 52; Carroll Co. Miller, Jacob; age 52; Vigo Co. Miller, Jacob; age 51; Dearborn Co. Miller, Jacob; age 48; Jay Co. Miller, Jacob; age 48; Marion Co. Miller, Jacob; age 46; Noble Co. Miller, Jacob; age 39; Kosciusko Co. Miller, Jacob; age 39; LaGrange Co. Miller, Jacob; age 38; Huntington Co. Miller, Jacob; age 36; Elkhart Co. Miller, Jacob; 32; Elkhart Co. Miller, Jacob; age 30; Greene Co. Miller, Jacob; age 28; Adams Co. Miller, Jacob; age 28; LaGrange Co. Miller, Jacob; age 26; Owen Co. Miller, Jacob; age 23; Madison Co. Miller, Jacob; age 22; LaGrange Co. Miller, Jacob; age 22; Marshall Co. Miller, Jacob; age 20; Hendricks Co.
NANCY MILLER'S LISTED IN 1870 IN CENSUS LISTING OH AS BIRTHPLACE Miller, Nancy; age 70; Montgomery Co. Miller, Nancy; age 65; Henry Co. Miller, Nancy; age 51; LaGrange Co. Miller, Nancy; age 46; Tippecanoe Co. Miller, Nancy; age 43; Wells Co. Miller, Nancy; age 17; Wells Co.