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| 1 Jun 1893 – | Helen C. (Pickett) Hagenbuch born in Three Rivers, Michigan, United States |
| 9 Jan 1912 – | Married John Y. Hagenbuch, Sr. |
| 20 Feb 1915 – | Son John Y. Hagenbuch, Jr. born in Michigan, United States |
| 20 Feb 1925 – | Son William P. Hagenbuch, Sr. born |
| 3 Jun 1988 – | Helen C. (Pickett) Hagenbuch died |
| 3 Jun 1988 – | Helen C. (Pickett) Hagenbuch buried in Riverside Cemetery, Three Rivers, Michigan, United States |