Family: Peter Aloysius Sinnott, Sr / Mary Catherine Breen (F2543)
 | Nicholas Sinnott (1795- ) 
|
 | Catherine FitzPatrick (1795- )
|
| Mary Sinnott (1829- ) |
| Peter Aloysius Sinnott, Sr (1824-1873)
|
| Mary Catherine Breen (1828-1891)
|
| Elizabeth Sinnott (1852- ) |
| Mary Catherine Sinnott (1853- )  |
| Peter Aloysius Sinnott, Jr (1854-1930) |
| William James Sinnott (1855- ) |
| Madaline Sinnott (1857- ) |
| Nicholas Vincent Sinnott (1860-1861) |
| Eleanor Sinnott (1862- ) |
| Florina Sinnott (1864-1865) |
| Nellie Sinnott (1865- ) |
| Louisa Sinnott (1872-1872) |