They show up in the 1860 census Trumbull Co. Warren Twp. It lists Edward Chadwick, age 30, a weaver. He was born in England.Emma, 24, born in Eng.Anna, age 4, born England, and Mary (at least it looks like it says Mary) age 2 born OHIO. That tells you they came to the US from England between 1856 and 1858. Hope this helps?