This page lists the members of the Congress of the USA as obtained from Wikipedia on 11th June 2011.
Representative
Years
State
Party
Edward Winthrop Gray
1915-1919
New Jersey
Republican
Edwin Gray
1799-1813
Virginia
Democratic-Repblican
Finly Hutchinson Gray
1911-1917/ 1933-1939
Indiana
Democratic
Hiram Gray
1837-1839
New York
John Cowper Gray
1820-1821
Democratic-Republican
Joseph Anthony Gray
1935-1939
Pennsylvania
Kenneth James Gray
1955-1974 / 1985-1989
Illinois
Oscar Lee Gray
Alabama
William Herbert Gray III
1979-1991
Benjamin Edwards Grey
1851-1855
Kentucky
Whig
Senator
George Gray
1885-1899
Delaware