ISO bmom's family/bdad's family - 1978 newfoundland

I'm trying to find information mostly on my birth father's family. He supposedly died before I was born (in a car accident, so I was told) and was from Nova Scotia. He had a brother and a sister. His mother died before I was born, from cancer. My birth mother has signed a veto prohibiting me from getting contact information about her, which has also prohibitied me from finding my birth father's information as well. My birth mother had something like 9 brothers and sisters. Her parents were 70 and 74 at the time of my birth. I was born ocotober 4th, 1978 in St. John's, Newfoundland. Maybe some of this sounds familiar. Thanks!