Robert F. Kennedy Jr.

Mary Kennedy was legally married to her estranged husband Robert Kennedy Jr. at the time of her death ... TMZ has learned. RFK Jr. had filed for divorce back in 2010 ... but according to court records, the divorce proceedings were still in progress ... and the judge had NOT yet finalized the…

Robert F. Kennedy Jr.'s estranged wife has died. Law enforcement sources tell TMZ, 52-year-old Mary Kennedy was found dead in her Mount Kisco, New York home this afternoon. The Bedford Police Department responded to the scene at approximately 1:36pm to investigate a possible "unattended death,"…