| Marriage | 3 Mar 1906 | Joseph Bonaventura Gumper and Maria Magdeline Pfau were married on 3 Mar 1906 in Freeport, Stearns County, Minnesota. |
| 1910 Census | 1910 | Joseph Bonaventura Gumper appeared as head of household in the 1910 Federal Census of Bowlus, Morrison County, Minnesota. Living with him was his wife, Maria, and their children, Arnold. |
| 1920 Census | 1920 | Joseph Bonaventura Gumper appeared as head of household in the 1920 Federal Census of Becker, Sherburne County, Minnesota, as Joseph D. Gumper. Living with him was his wife, Maria, and their children, Arnold. |
| 1930 Census | 1930 | Joseph Bonaventura Gumper appeared as head of household in the 1930 Federal Census of Belfield, Stark County, North Dakota. Living with him was his wife, Maria. |
Joseph Bonaventura Gumper