Did they live in Dakota or Washington County? Hastings is located in Dakota County, but a small portion of it extends into Washington County.
George Daniels isn't found in any of the Dakota County, MN census records state census (1857, 1865, 1885) or federal Census 1900-1930. This database can be found on the Dakota Co., MN USGenweb (www.rootsweb.com). Have you done any census research on their children? Did they remain in MN/leave MN? Marry?