Looking for information on my grandfather's side of the family. His father's name was John, and I think his mother's name was Roshanna or Roseanna or something similar. John was from Germany, and Roshanna from Russia. They had a large family, some of the children's names were Emma, Sarah, Pauline, Reinholt, Paul (my grandfather). I believe the family farm was outside of DeSmet South Dakota, and I think some of the family are now spelling their name as Gross, and are still in the area of the family farm. Can anyone help provide more info?