1.  Anon.  1966.  Marriage Index:  Ohio, 1789-1850.  Liahona Research, Orem, UT (Broderbund CD-400):

Corbin, Amelia	Cain, John	7 Apr 1844	Coshocton Co.
Corbin, Rebecca	Rahel, Frederick	3 May 1849	Coshocton Co.

2.  Census Index:  U.S. Selected Counties, 1790 (Broderbund CD-311):  not found (nor his father, David), but the 1790 census of VA was destroyed.

3.  Census Index:  U.S. Selected Counties, 1800 (Broderbund CD-312):  not found, but the 1800 VA census was destroyed.

4.  Census Index:  U.S. Selected Counties, 1810 (Broderbund CD-313):  not found; the 1810 VA census is extant, but the 1810 census of Ohio was lost, except for Washington County.

5.  Census Index:  U.S. Selected Counties, 1820 (Broderbund CD-314):  not found, and both the VA and OH 1820 censuses are extant.

6.  1830 Census Index and Digital Images (online at Ancestry.com; Image #1 of 4; extracted by Diana Gale Matthiesen):¤•

1830

OH

Tuscarawas Co.

Salem Twp.

p. 26

Humphrey Corbin

000 110 001 - 001 000 100

These data indicate:

No. & Sex	Age Class	Therefore Born	Individuals Inferred
1 male	15-19	1810-1815	= Benjamin (b. 1810)
1 male	20-29	1800-1810	= John? (b. 1809/10) = Daniel? (b. 1806/7)
1 male	60-69	1760-1770	= Humphrey (b. 1768)
1 female	10-14	1815-1820	= Mary (b. 1816) = Amelia (b. 1813/4)
1 female	40-49	1780-1790	= Elsey (b. 1770)

There aren't enough children in the household.  Or did the ones for whom we can find no marriages die young?  Either the enumerator erred or Elsey is fibbing about her age.  Listed between son, Thomas CORBIN, on one side, and son, Joseph CORBIN, on the other side. 

7.  1840 Census Index and Digital Images (online at Ancestry.com; Image #4-5 of 9; extracted by Diana Gale Matthiesen):¤

1840

OH

Coshocton Co.

Franklin Twp.

pp. 295B-296A

Line 15

Elsey Corbin

000 000 200 - 000 020 001

0100000

These data indicate:

No. & Sex	Age Class	Therefore Born	Individuals Inferred
2 males	40-49	1790-1800	= Son B = Son A
2 females	20-29	1810-1820	= Mary (b. 1816) = Amelia (b. 1813/4)
1 female	60-69	1770-1780	= Elsey (b. 1770)
1	person engaged in agriculture

Listed two lines from son, Benjamin CORBIN, who is three lines from James MOORE, husband of daughter, Magdalene, who is two lines from Henry KREAMER, husband of daughter, Elizabeth.