This is a line we are definitely thinking might possibly be our's. We would love to hear from anyone with this lineage.
The following information is from the Latter Day Saints familysearch.com website and from D.A.R. records. This is a D.A.R. line.
Elvin Valentine born 1744 in North Hempstead, L.I., New York
Died: 1799 in Peekskill, New York
Married in Peekskill, New York
Abigail Oakley born ca. 1729 at Yorktown, New York (daughter of Nehemiah   Oakley)
 
Their Children:
 
John C. Valentine born February 19, 1768 at Peekskill, New York
Died 1856
Married Mary Montrose
** Appears on 1820 New York census
Thomas Oakley Valentine born December 3, 1769 at Peekskill, New York
Died 1832
Married in 1795 to Jane Valentine (born ca. 1774)
Abraham Valentine born June 19, 1772 at Peekskill, New York
Died 1837
Married 1794 to Hannah Bogardus (born about 1773)
 See also Fishkill Church Records page
Isaac Valentine born December 15, 1775 at Peekskill, New York
** Appears in 1820 New York Census in Charlton County
Jacob Valentine born March 25, 1778 at Peekskill, New York
Married Mary Clark (born ca. 1782)
James Valentine born December 31, 1780 at Peekskill, New York
Died: 1858 at Spencer, New York
** Appears in 1820 New York Census in Charlton County
Married 1808 to Phebe Rhodes (born ca. 1787 in Spencer, New York)
Ann Valentine born 1782 in Peekskill, New York
Nehimiah Valentine born 1783 at Peekskill, New York per LDS or
in 1780 per D.A.R. records
Married in 1804 to Martha Barrett (born 1783)
 Daughter Caroline E. married Jacob Bennett; their son Cornelius   Bennett married Anna Ros; Cornelius and Anna's daughter, Lettie   married John B. Morrill and their daughter Nettie married    Singleton  Ashenfelter (per D.A.R.)
Caleb Valentine born 1787 in Peekskill, New York
Died 1863 in West Camden, New York
Married in 1819 to Sarah Jones (born ca. 1798 in West Camden, N.Y.)
 
Additions, Corrections, Questions, Comments, PLEASE email us!!!