Laurenus Clark Seelye and Polly/Mary Catherine Seelye are sixth cousins. Their common ancestor is Nathaniel Seelye, 1627-1675. The relationships, including all the in between generations, are well documented by the Seeley Genealogical Society. A summary from their records is presented here:
| Gen # | SGS # | Line 1 | SGS # | Line 2 |
|---|---|---|---|---|
| 1 | 1 | Robert, 1602-1667 | 1 | Robert, 1602-1667 |
| 2 | 2 | Nathaniel, 1627-1675 | 2 | Nathaniel, 1627-1675 |
| 3 | 5 | Nathaniel, 1650-1688 | 7 | Benjamin, 1658-1696 |
| 4 | 23 | James, 1681-1729 | 32 | John, 1684-1740 |
| 5 | 73 | Nathan, 1714-1766 | 94 | Benjamin, 1712-1777 |
| 6 | 223 | Seth | 273 | Nehemiah, 1743-1802 |
| 7 | 640 | Nathan | 782 | Joseph, 1776-1854 |
| 8 | 2056 | Seth, 1795-1869 | 2234 | George, 1806-1885 |
| 9 | Laurenus Clark, 1837-1924 | Polly Catherine, 1827-1908 |
Laurenus Clark Seelye was the first president of Smith College, Northampton, Hampshire Co, MA. Polly Catherine Seelye was the mother of Alfred Seelye Roe, author of Rose Neighborhood Sketches, Wayne County, New York.
The SGS # is the individual identification number used by the Seeley Genealogical Society.