 Birth | June 2, 1842 42 38 |
 Birth of a sister | Minerva Duncan about 1844 (Age 18 months) Note: Birth place/year based on 1850 Census |
| Death of a paternal grandfather | Thomas Duncan before November 3, 1845 (Age 3 years) |
| Death of a father | Philip Duncan about 1845 (Age 2 years) Note: Died before 1850 Census |
 Historical Event | Mexican-American War from 1846 to 1848 (Age 3 years)Note: The Mexican-American War was an armed conflict between the United States of America and the United Mexican States from 1846 to 1848 in the wake of the 1845 U.S. annexation of Texas, which Mexico considered part of its territory despite the 1836 Texas Revolution - http://en.wikipedia.org/wiki/Mexican%E2%80%93American_War |
 Census | October 28, 1850 (Age 8 years) |
| Historical Event | Influenza Epidemic between 1857 and 1859 (Age 14 years)Note: In 1857-1859, there was an extremely severe worldwide outbreak of influenza - http://www.flutrackers.com/forum/showthread.php?t=3884 |
| Census | August 1, 1860 (Age 18 years) |
| Historical Event | American Civil War between April 1861 and May 1865 (Age 18 years)Note: In the spring of 1861, tensions between the northern and southern United States over issues including state's right versus federal authority, westward expansion and slavery exploded into the American Civil War - http://en.wikipedia.org/wiki/American_Civil_War |
| Death of a sister | Sarah Elizabeth Duncan about 1865 (Age 22 years) Note: Sarah was listed in the 1860 Census; but, could not be found in the 1870 Census. Her youngest daughter, Lucinda, was shown in the 1870 Census living with Mary (sister) and John Black (Mary's husband). It is assumed that Sarah died sometime between the 1860 and 1870 Census. |
| Death of a brother | Thomas F Duncan about 1865 (Age 22 years) Note: Assumed he died in the Civil War |
 Marriage | Jonathan Mabry Black — View this family March 4, 1866 (Age 23 years) |
| Historical Event | The Alaska Purchase 1867 (Age 24 years)Note: The Alaska Purchase was the purchase of 586,412 square miles of new territory by the United States from the Russian Empire (a bargain at two cents an acre) - http://en.wikipedia.org/wiki/Alaska_Purchase |
| Historical Event | Yellow Fever Epidemic 1867 (Age 24 years)Note: 3,093 perished from yellow fever in New Orleans - http://historyengine.richmond.edu/episodes/view/306 |
| Historical Event | Transcontinental Railroad completed 1869 (Age 26 years)Note: The First Transcontinental Railroad was a 1,907-mile contiguous railroad line constructed between 1863 and 1869 across the western United States to connect the Pacific coast with the existing Eastern U.S. rail network - http://en.wikipedia.org/wiki/First_Transcontinental_Railroad |
| Census | September 1, 1870 (Age 28 years) |
| Historical Event | Yellow Fever Epidemic of 1878 1878 (Age 35 years)Note: Over 13,000 deaths occurred from yellow fever in lower Mississippi Valley - http://en.wikipedia.org/wiki/History_of_yellow_fever |
| Census | June 19, 1880 (Age 38 years) |
| Death of a mother | Mary Elizabeth Crawford about 1884 (Age 41 years) |
| Historical Event | Spanish-American War between April 1898 and August 1898 (Age 55 years)Note: The Spanish-American War was a conflict in 1898 between Spain and the United States, the result of American intervention in the Cuban War of Independence - http://en.wikipedia.org/wiki/Spanish%E2%80%93American_War |
| Death of a husband | Jonathan Mabry Black July 11, 1908 (Age 66 years) |
| Death of a brother | John Arthur Bryan Duncan July 4, 1912 (Age 70 years) |
| Death of a sister | Nancy Jane Duncan September 29, 1912 (Age 70 years) |
| Historical Event | Polio Epidemic 1916 (Age 73 years)Note: Over 7,000 deaths and 27,363 cases reported in America's worst polio (infantile paralysis) epidemic - http://goo.gl/ZBEQA1 |
| Historical Event | World War I between 1917 and November 1918 (Age 74 years)Note: The United States enters 'The Great War' where more than nine million combatants were killed- http://en.wikipedia.org/wiki/World_War_I |
| Historical Event | Spanish Influenza Epidemic 1918 (Age 75 years)Note: Spanish Influenza killed over 500,000 people in the United States, and somewhere between 20 and 40 million in what has been cited as the most devastating epidemic in history - http://virus.stanford.edu/uda/ |
 Death | June 12, 1922 (Age 80 years) |
 Burial | Cemetery - also add to Place of burial: Oakland Cemetery |