| Birth | 1842 | Missouri | | | |
| Marriage | 1859 | Richmond, Ray, Missouri - Col John C. Warnstaff | | | |
| Occupation-shared | 13 Sep 1859 | (Col John C. Warnstaff) US Postmaster - Richmond, Ray, Missouri | | | |
| Alt name | 1861 | Mary L. Warnstaff | | | |
| Property | Aug 1861 | Civil War Papers - Ray, Missouri | | | |
| Legal-shared | 29 Apr 1863 | (Pvt John Neel "Rebel" Akers) Civil War - Union Citizen Provost Marshal File No 15061, Co D 28 NC Inf | | | |
| Marriage | 3 Jul 1869 | Scott, Iowa - Andrew Robeson | | | |
| Alt name | 1880 | Mary Warrenstaff | | | |
| Census (family) | 2 Jun 1880 | Page 5, SD No. 7, ED. No 136, Richmond, Ray, Missouri - Col John C. Warnstaff | | | |
| Census (family)-shared | 2 Jun 1880 | (Col John C. Warnstaff and Mary L. Akers) Page 5, SD No. 7, ED. No 136, Richmond, Ray, Missouri | | | |
| Military | 1890 | Widows Benefits - Georgeville Precinct, Ray, Missouri | | | |
| Military-shared | 1890 | (Mary L. Akers) Widows Benefits - Georgeville Precinct, Ray, Missouri | | | |
| Census | 1 Jun 1900 | 1111 Woodland Ave, Kansas City, Jackson, Missouri | | |  |
| Death | 23 Dec 1922 | Kansas City, Jackson, Missouri | | | |
| Burial | 27 Dec 1922 | Richmond Cemetery, Richmond, Ray, Missouri | | | |
| Probate | 2 Jan 1923 | Winwood, Clay, Missouri | | | |
