I need help finding my grandmother and her family.

My grandmother was Mary Bernadette King Born August 17th 1935. She grew up in and I believe was born in St. John’s. She left around 1953 to the States were she married my grandfather.

Her parents were Joseph King and Mary Mccormack (later King). I believe they were born sometime around 1895-1905.

She had mutliple sibling but one I know for sure was Michael Robert King (Born Aug 15th, 1947). he passed in Dec 16th, 2009 and is buried in Newfoundland.

I have been searching for the last 4-5 months, but have not come up with anything at family search, Ancestry 14 day trial, or the My Heritage 14 day trial. Any help or direction would be appreciated.