1832 - Yes, date unknown
| Alfred Underwood | |
| B: | 1929 |
| New York, United States | |
| D: | 16 May 1935 |
| Brooklyn, Kings, New York, United States | |
| Alfred James Underwood | |
| B: | 10 Mar 1901 |
| Maryland, United States | |
| D: | 29 Mar 1990 |
| New York, United States | |
| Florence Helmus | |
| B: | 1 Oct 1910 |
| New York, United States | |
| M: | 28 Jul 1927 |
| Kings, New York, United States | |
| D: | 3 Nov 1996 |
| New York, United States | |
| Gilbert M Underwood | |
| B: | 1871 |
| Maryland, United States | |
| D: | 7 Sep 1929 |
| Maryland, United States | |
| Lillie Malinda Lowe | |
| B: | 7 Sep 1877 |
| Frederick, Maryland, USA | |
| M: | 1899 |
| Maryland, United States | |
| D: | 11 Feb 1944 |
| 6 Brightside Ave, Pikesville, Baltimore, Maryland, USA | |
| Alfred J. Underwood | |
| B: | Mar 1832 |
| Maryland, USA | |
| D: | Yes, date unknown |
| Susan C. Underwood | |
| B: | Sep 1835 |
| Maryland, United States | |
| D: | Yes, date unknown |
