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| 5 Jan 1914 – | Margaret O. (Melvin) Hagenbuch born in Washington DC, United States |
| 7 Feb 1936 – | Son Richard P. Hagenbuch, Sr. born |
| 16 Jul 1936 – | Married Ralph B. Hagenbuch |
| 27 Jan 1941 – | Son John R. Hagenbuch, Sr. born in Washington DC, United States |
| – | Daughter Joan M. (Hagnebuch) Huitt born |
| 5 Dec 1987 – | Margaret O. (Melvin) Hagenbuch died in Polk, Florida, United States |
| 5 Dec 1987 – | Margaret O. (Melvin) Hagenbuch buried |