Mary L. DeCosta
1864 -
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| Florence Viola Dennis | |
| B: | Jul 1891 |
| Somerville, Middlesex County, Massachusetts, USA | |
| Edward William Whalen | |
| B: | 17 Jul 1891 |
| Boston, Suffolk County, Massachusetts, USA | |
| M: | 19 Nov 1912 |
| Boston, Suffolk County, Massachusetts, USA | |
| Mary L. DeCosta | |
| B: | Dec 1864 |
| Portugal | |
| William H. Dennis | |
| B: | Oct 1844 |
| Massachusetts, USA | |
| M: | Abt 1890 |
| D: | Bef 1920 |