Daniel Cone (son of Nathaniel Cone II and Mary Graves) was born 07 Apr 1759 in East Haddam, Middlesex, CT, and died 28 Jun 1842 in Preu, Bershire, Massachusetts.He married Olive Ackley on 28 Apr 1785 in East Haddam, Middlesex, CT. More About Daniel Cone and Olive Ackley: Marriage: 28 Apr 1785, East Haddam, Middlesex, CT.