2009 : Mary Kennedy , 38 , died of asphyxiation due to exposure , a local official said . She is called a gifted artist and a ` ` relentless advocate of green design '' She married Robert F. Kennedy Jr. in 1994 , and the couple had four children together . CNN 's Nina Ibarra contributed to this report . He filed for divorce in 2010 , the same year Mary Kennedy was arrested for DWI .
2009 : Mary Kennedy , 38 , died of asphyxiation due to exposure , a local official said . She is called a gifted artist and a ` ` relentless advocate of green design '' She married Robert F. Kennedy Jr. in 1994 , and the couple had four children together . He filed for divorce in 2010 , the same year Mary Kennedy was arrested for DWI .