Abt 1880 - Yes, date unknown
| Peter Costa | |
| B: | Abt 1910 |
| D: | Yes, date unknown |
| Louis Costa | |
| B: | Abt 1910 |
| D: | Yes, date unknown |
| [d.\ Rose] Costa | |
| B: | Abt 1910 |
| D: | Yes, date unknown |
| Lawrence Costa, Jr. ^ | |
| B: | 1939 |
| D: | 31 May 1947 |
| Brookhaven, Brookhaven, Suffolk, NY | |
| Thomas Costa, ^ | |
| B: | 1943 |
| D: | 31 May 1947 |
| Brookhaven, Brookhaven, Suffolk, NY | |
| Lawrence Costa, ^ | |
| B: | 1909 |
| Italy | |
| D: | 12 Jun 1944 |
| France | |
| Dorothy L. Allen, ^ | |
| B: | 1921 |
| Brookhaven, Brookhaven, Suffolk, NY | |
| D: | 31 May 1947 |
| Brookhaven, Brookhaven, Suffolk, NY | |
| Rose Costa(), > | |
| B: | Abt 1880 |
| Italy | |
| D: | Yes, date unknown |
