| 1. Mary Julia Derr |
 |
| B: |
20 May 1905 |
| P: |
Baltimore, Baltimore County, Maryland |
| D: |
20 Jul 1979 |
| P: |
|
|
| 2. Marion Bantz Derr |
|
| B: |
19 Apr 1870 |
| P: |
Maryland |
| M: |
Abt 1905 |
| P: |
|
| D: |
14 Nov 1928 |
| P: |
Baltimore, Baltimore County, Maryland |
|
| 4. William Henry Derr |
|
| B: |
25 Mar 1824 |
| P: |
Lewistown, Frederick County, Maryland |
| M: |
28 Jan 1847 |
| P: |
Frederick County, Maryland |
| D: |
2 Dec 1897 |
| P: |
Baltimore, Baltimore County, Maryland |
|
| 8. John W. Derr |
|
| B: |
1 Oct 1789 |
| P: |
York County, Pennsylvania |
| M: |
|
| P: |
|
| D: |
16 Oct 1872 |
| P: |
Frederick County, Maryland |
|
1905 - 1979 (74 years)