Bparents married 1/1965 annulled before birth in 9/1965 Do you know them?

My birthmother was born in Montana. I believe she stayed there after she was born. My birthparents were married in early 1965 and their marriage was annulled a few months later in 1965 before I was born. My b father was alledgidly writing bad checks. I was born September 1965 in Indiana. My b mom came there to stay with an aunt and uncle. She never returned to her home after I was born. My bmom has a sister quite a few years younger than her. My bfather has two younger brothers. My biological grandparents are in the same home they lived in in 1965. My bparents were a few years apart in age. Does this sound familar to anyone? My bmom wants no contact. I am interested in bfather since he is not on birth certificate because of the annulment they cannot contact him to see if he wants contact. Any help would be greatly appreciated. Carolyn