I am trying to trace down any details concerning my grandfather's second wife. Her name was Cora Holleran Cuft McMahon. My grandfather was John McMahon. This was Cora's third marriage. Her previous married names were Holleran and Cuft. They married in Our Lady of Lebanon Church (Catholic) in Niagara Falls New York and lived in Windsor, Ontario, Canada. According to my aunt, Cora was an American and she is buried in Niagara Falls, New York. Any help is greatly appreciated.