My great great grandmother was Helene Helwig (b. 1876 d.1909). Her sister was Anna Margarite Helwig, who was born in Oldenburg, Germany in 1874. Their father was Diedrich Helwig (b. 1850 d. 1898) and their mother was Anna Margaretha Otten (b.1850 d. 1918). I know that they must have immigrated at some point, as Helene died in Bever Creek, MN. Does anyone have any immigration records or any knowlege of Diedrich Helwig's family?