Who is Marina Prusakova Oswald from Case Closed: Lee Harvey Oswald and the Assassination of JFK and what is their importance?

Marina Prusakova was Lee Harvey Oswald's young, Russian wife. The couple had two children, but Marina left Lee prior to the assassination because of the abuse she suffered at his hands. Marina was an endearing young lady, and the community in Dallas provided her with a bounty of friendship and support.