Musician, Printer, Singer-Songwriter, Educator are the occupations of this person . The person's age was 81 . This person is singing in the genres jam band  . September 18, 1981 is when John Robert Gregg was born . The doctoral students of John Robert Gregg are Leonid Brekhovskikh .  Iris are the labels in which this person sings . Chennai is where John Robert Gregg had a residence . johndenver.com is John Robert Gregg's website . The person named John Robert Gregg died on September 7,1997 . The person worked at King's College London institutions . The crimes that John Robert Gregg is convicted for are drug trafficking . Sarah Hudson (cousin) are relatives of John Robert Gregg . The person won Daniel Guggenheim Medal (1966) . John Robert Gregg was wedded to André-Louis Auzière , ( m. 1974;  div. 2006) , Emmanuel Macron  ,  ( m. 2007) . The person has 0 kids . The resting place of John Robert Gregg is United States Naval Academy Cemetery
John Robert Gregg was rewarded John Scott Medal (1913), National Medal of Science (1979)