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

Corbin, John

Noble, Polly

12 May 1825

Clermont Co.

2.  1830 Census Index and Digital Images (online at Ancestry.com; Image #15 of 20; extracted by Diana Gale Matthiesen):

1830

OH

Clermont Co.

Monroe Twp.

p. 235

Ln. 26

John Corbin Junr

100 001 - 200 110

These data indicate:

No. & Sex	Age Class	Therefore Born	Individuals Inferred
1 male	4 or under	1825-1830	= Son A
1 male	30-39	1790-1800	= John
2 females	4 or under	1825-1830	= Daughter B = Daughter A
1 female	15-19	1810-1815	= ?
1 female	20-29	1800-1810	= Wife

The teenage female is too old to be their daughter.  Listed two lines from John's brother, Abraham C. CORBIN, who is two lines from John's uncle, Abraham CORBIN, who is three lines from John's father, John CORBIN, Sr.

3.  Census Index:  U.S. Selected Counties, 1840 (Broderbund CD-316):  not found.  There was a John CORBIN in Monroe Twp., Clermont Co., OH, in 1840, who was missed by the indexer, but that John CORBIN is the one who married Elizabeth BROWN.  I checked every line of every page in Monroe Township and did not find another John CORBIN.