| Possible Birthdate | 1 Apr 1868 | According to at least one source, his birthdate was 1 Apr 1868 birthplace was Johnson, Texas. |
| Birth | 1 Apr 1871 | William Quincy Clary was born on 1 Apr 1871 in Texas. |
1880 Census
(with Parents)
| 12 Jun 1880 | William appeared in the 1880 Federal Census of Johnson County, Texas, as William Q. Clary, in the household of his parents, Martha and John S. Clary. He is a white male, age 9. Son of head of household. He attended school within the census year. He was born in Texas. His mother and father were born in Texas. |
| Marriage | 12 Jul 1888 | William Quincy Clary and Lonnie S. Hadley, daughter of John Hadley and Perveine Ward, were married on 12 Jul 1888 in Erath County, Texas. |
| 1900 Census | 1900 | William Quincy Clary appeared as head of household in the 1900 Federal Census of Justice Precinct 1, Montague County, Texas. Living with him was his wife, Lonnie, and their children, John, Newt, Enoch, Lonnie and Golden. |
| 1920 Census | 1920 | William Quincy Clary appeared as head of household in the 1920 Federal Census of Justice Precinct 7, Montague County, Texas. Living with him was his wife, Lonnie, and their children, Lonnie and Golden. |
| Death | 8 Mar 1957 | William Quincy Clary died on 8 Mar 1957 in Nocona, Montague County, Texas, at age 85. Cause of death: congestive heart failure.  |
| Burial | 9 Mar 1957 | He was buried on 9 Mar 1957, age 85, in Robinson Cemetery, Montague County, Texas. |
William Quincy Clary