| May P. (Hagenbuch) Baker | 26 Dec 1895 | Mar 1970 |
| Maydell H. (Hagenbuch) Eksergian | 25 Sep 1902 | 4 Jun 1998 |
| Mayme Hagenbuch | 1907 | |
| McHenry F. Hagenbuch | 9 Oct 1892 | 22 Dec 1958 |
| Melanie Ann Hagenbuch | | |
| Melissa Dawn (Amundson) Hagenbuch | 25 Nov 1977 | |
| Melvin Albert Hagenbuch | 14 Jan 1924 | 9 Sep 2019 |
| Meredith Martin (Gurley) Hagenbuch | | |
| Merlin "Fred" Fred Hagenbuch | 27 Jun 1931 | 2005 |
| Merlin Fred Hagenbuch, Jr. | | |
| Merrill Andrew Hagenbuch, Sr. | | |
| Merrill Andrew Hagenbuch, Jr. | | |
| Michael (Hagenbuch) Hagenbaugh | 1815 | Apr 1892 |
| Michael Hagenbuch | 17 Sep 1746 | 23 Mar 1809 |
| Michael Hagenbuch | 18 Aug 1799 | 12 Apr 1852 |
| Michael Hagenbuch | 20 Dec 1805 | 9 Aug 1855 |
| Michael Hagenbuch | 25 Jul 1800 | 1809 |
| Michael Hagenbuch | 1822 | 30 Nov 1869 |
| Michael Allen Hagenbuch | | |
| Michael Brian Hagenbuch | | |