Trying to find daughter of Robert Hisey from South Bend Indiana

My grandfather was Robert Hisey and my fathers name is Robert Hisey. My father was born in South Bend Indiana and I'm not very sure were my grandfather was born. He has two daughters and son by Bernice Hisey (madien name Strange). I know that he has other children too, and that is what I am trying to find out. If anyone has any information on anything, please respond.

Thank you,
Ashley Hisey