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| 28 Nov 1921 – | Robert F. Hagenbuch born |
| 1944 – | Married Harriet E. (Smith) Hagenbuch |
| – | Son Mark S. Hagenbuch born |
| 6 Mar 1986 – | Robert F. Hagenbuch died in Three Rivers, St. Joseph County, Michigan, United States |
| 6 Mar 1986 – | Robert F. Hagenbuch buried |