Identification of family farm or relatives

My grandmother was Olga Bruget who lived in South Dakota, USA. I know that her family lived in Brottum Norway. We are visiting Norway in August and would love to connect to any relatives or to see where they came from . I have an extensive history of the family. My great great grandfather was Jorgen Simensen Bruget , 1836-1916 who emigrated in the 1860's or 1870's. Thanks