Isaac Jackson Fox
- Born August 28, 1801 in Jaffrey, Cheshire county, New Hampshire.
- Parents were JONATHAN FOX and SIBEL JACKSON.
- Married SOPHIA WILDER. The intention was filed September 23, 1827 in Leominster, Worcester County, Massachusetts.
- Married PERMELIA WILDER on November 17, 1839 in Leominster, Worcester County, Massachusetts.
- Died May 6, 1852 in Nashua, Hillsborough County, New Hampshire.
CHILDREN WITH SOPHIA WILDER
- HENRY JACKSON FOX, born in August, 1828 in New Hampshire; died March 12, 1886 in Tewksbury, Middlesex county, Massachusetts.
- ANN SOPHIA FOX, born in 1829; died September 8, 1829 in Jaffrey, Cheshire County, New Hampshire.
- GEORGE WILDER FOX, born January 24, 1831 in New Hampshire; died April 3, 1900 in Hillsborough County, New Hampshire.
- SARAH JOSEPHINE FOX, born December 5, 1832 in New Hampshire; died February 20, 1915 in Hudson, Hillsborough County, New Hampshire. Married GEORGE D. JAQUITH on November 14, 1866 in Nashua, Hillsborough County, New Hampshire.
- CHARLES JOSEPH FOX, born about 1835, died in infancy.
- ELOISA HOWE FOX, born January 29, 1837 in New Hampshire; died February 10, 1890 in Boston, Suffolk County, Massachusetts. Married EDWARD GAY on December 31, 1859 in Nashua, Hillsborough County, New Hampshire.
CHILDREN WITH PERMELIA WILDER
- CHARLES D. W. FOX, born in 1843 in New Hampshire.
- SOPHIA FOX, born in 1844 in Nashua, Hillsborough county, New Hampshire.