From Familysearch.org:
Husband Joseph Gray Birth: 1796 , , Ireland
Marriage: < 1821> <Belfast, , Ulster Province,
Ireland>
Death:
Burial:
Wife Susanna Brewster
Birth: 1798 Belfast, Down, Ireland
Marriage: < 1821> <Belfast, , Ulster Province,
Ireland>
Death:
Burial:
Children
1. Samuel Gray
Birth: SEP 1822 Belfast, Down, Ireland
Death: 31 AUG 1887
Burial:
And from th Pedigree files:
1. Sex Name
F Martha Serena GRAY (AFN:1NM9-3JF) Pedigree
Born: 1857 Place: Bucyrus, , Oh
Died: 1929 Place: Bronxville, , Ny
2. Sex Name
M Edward GRAY (AFN:8ZQ9-85) Pedigree
Born: 19 Jan 1861 Place: Loda, , Il
3. Sex Name
F Ella GRAY (AFN:8ZQ9-9B) Pedigree
Born: 21 Oct 1864 Place: Loda, , Il
4. Sex Name
F Serena Martha GRAY (AFN:8ZQ9-70) Pedigree
Born: 24 Oct 1857 Place: Bucyrus, , Oh
5. Sex Name
F Lucille (Susy) GRAY (AFN:8ZQ9-5M) Pedigree
Born: 31 Oct 1852 Place: , Washington, Pa
6. Sex Name
F Isabella GRAY (AFN:8ZQ9-6S) Pedigree
Born: 13 Apr 1855 Place: Bucyrus, , Oh
7. Sex Name
F Anna Jane GRAY (AFN:8ZQ8-LQ) Pedigree
Born: 12 Aug 1850 Place: Philadelphia, , Pa
Died: 12 Sep 1936 Place: Kansas City, , Ks
BB:
I found the family in the 1870 and 1880 Census in Loda, Illinois but haven't found them before that.
They were on the move and the first child was born in Philly 6 days after the 1850 Census, it appears, was taken.