| Father | Male Alfredo Lassise |
| Born | 22 May 1885 | Sabana Grande, Sabana Grande, Puerto Rico, USA  |
| Died | San Juan, San Juan, Puerto Rico, United States of America |
|
| Buried | ||
| Married | ||
| Other Spouse | Isabel Rivera | F49 | |
| Married | 20 Dic 1912 | Mayagüez, Puerto Rico |
| Other Spouse | Monserrate Rodriguez | F51 | |
| Married | 18 Oct 1915 | Mayagüez, Puerto Rico |
| Father | Luis Lassise | F48 Group Sheet | |
| Mother | Francisca Lizana | F48 Group Sheet | |
| Mother | Female Rosita Rivera Mateu |
| Born | ||
| Died | ||
| Buried | ||
| Father | Antonio Rivera | F374 Group Sheet | |
| Mother | Filomena Mateu | F374 Group Sheet | |
| Child 2 | Male George William Lassise |
| Born | 24 Nov 1881 | Puerto Rico |
| Died | Dec 1960 | Martin, Florida |
| Buried | ||
| Spouse | Gertrude Sophia Becker | F373 | |
| Married | 1907 | Philadelphia, Philadelphia, Pennsylvania, United States |
| Child 3 | Male Luis Lassise |
| Born | 26 Jun 1886 | Mayaguez, Puerto Rico, USA |
| Died | ||
| Buried | ||
| Spouse | Rosa Acevedo Rios | F302 | |
| Married | 7 Jun 1919 | Mayagüez, Puerto Rico |
| Child 4 | Male Enrique Lassise |
| Born | 6 Apr 1890 | Puerto Rico |
| Died | Abt 1980 | Sabana Grande, Puerto Rico |
| Buried | ||
| Spouse | Matilde Schettini | F303 | |
| Married | 29 May 1914 | Sabana Grande, Puerto Rico |
