1785 - Birth of his biological mother Sarah Knight at Georgia, USA 

1786 - Birth of his biological father Robert O'Rear at North Carolina, USA 

1808/1809 - Marriage of parents at Greene County, Georgia, USA 

1811 - Birth at Greene County, Georgia, USA 

1820 - Death of his biological mother Sarah Knight

10 Mar 1878 - Death of his biological father Robert O'Rear at Wilkes County, Georgia, USA