30 Oct 1735 - Birth of his biological father John Adams at Braintree, Norfolk County, Massachusetts, USA 

22 Nov 1744 - Birth of his biological mother Abigail Smith at Weymouth, Norfolk County, Massachusetts, USA 

25 Oct 1764 - Marriage of parents at Weymouth, Norfolk County, Massachusetts, USA 

11 Jul 1767 - Birth at Braintree, Norfolk County, Massachusetts, USA 

12 Feb 1775 - (7 years) Birth of his wife Louisa Johnson at London, Middlesex, England, United Kingdom 

26 Jul 1797 - (30 years) Marriage with Louisa Johnson at All Hollows Barking Parish, London, England 

28 Oct 1818 - (51 years) Death of his biological mother Abigail Smith at Quincy, Norfolk County, Massachusetts, USA 

Oct 1818 - (51 years) Burial of his biological mother Abigail Smith at United First Parish Church Cemetery, Quincy, Norfolk County, Massachusetts, USA 

4 Jul 1826 - (58 years) Death of his biological father John Adams at Quincy, Norfolk County, Massachusetts, USA 

10 Jul 1826 - (58 years) Burial of his biological father John Adams at United First Parish Church Cemetery, Quincy, Norfolk County, Massachusetts, USA 

23 Feb 1848 - (80 years) Death at Washington, District of Columbia, Disctrict of Columbia, USA 

Feb 1848 - (80 years) Burial at United First Parish Church Cemetery, Quincy, Norfolk County, Massachusetts, USA 

15 May 1852 - Death of his wife Louisa Johnson at Washington, District of Columbia, Disctrict of Columbia, USA 

May 1852 - Burial of his wife Louisa Johnson at United First Parish Church Cemetery, Quincy, Norfolk County, Massachusetts, USA