 Birth | September 27, 1903 26 20 |
 Death of a father | George E Wycoff February 19, 1910 (Age 6 years) |
| Marriage of a parent | Emile John O'Brien Jr. — Lillian Thomas — View this family September 2, 1912 (Age 8 years) |
| Birth of a half-brother | Joseph Thomas O'Brien May 17, 1914 (Age 10 years) |
 Historical Event | Polio Epidemic 1916 (Age 12 years)Note: Over 7,000 deaths and 27,363 cases reported in America's worst polio (infantile paralysis) epidemic - http://goo.gl/ZBEQA1 |
| Birth of a half-brother | Stanley Jack O'Brien September 1, 1918 (Age 14 years) |
| Historical Event | World War I between 1917 and November 1918 (Age 13 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 14 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/ |
 Census | January 8, 1920 (Age 16 years) |
| Historical Event | The Great Depression October 1929 (Age 26 years)Note: The Wall Street Crash sets off the Great Depression, the most severe worldwide economic depression in the 20th century - http://en.wikipedia.org/wiki/Great_Depression |
| Census | April 4, 1930 (Age 26 years) |
| Historical Event | World War II between December 1941 and August 1945 (Age 38 years)Note: The United States enters World War II after the attack at Pearl Harbor, a global war that involved the vast majority of the world's nations and including all of the great powers - http://en.wikipedia.org/wiki/World_War_II |
| Historical Event | Korean War between 1950 and 1953 (Age 46 years)Note: The Korean War was a war between the Republic of Korea (South Korea), supported by the United Nations, and the Democratic People's Republic of Korea (North Korea), at one time supported by the People's Republic of China and the Soviet Union - http://en.wikipedia.org/wiki/Korean_War |
| Death of a mother | Lillian Thomas May 31, 1964 (Age 60 years) |
| Historical Event | Vietnam War between 1946 and 1975 (Age 42 years)Note: The Vietnam War was a long, costly armed conflict that pitted the communist regime of North Vietnam and its southern allies, known as the Viet Cong, against South Vietnam and its principal ally, the United States. The divisive war, increasingly unpopular at home, ended with the withdrawal of U.S. forces in 1973 and the unification of Vietnam under Communist control two years later. More than 3 million people, including 58,000 Americans, were killed in the conflict. - http://en.wikipedia.org/wiki/Vietnam_War |
 Death | March 4, 1966 (Age 62 years) |