— born in MD or OH:
  4.  (Daughter B) CORBIN, b. 1835-40
  5.  (Son A) CORBIN, b. 1835-40

— born in Muskingum Co., OH:
  6.  George Washington CORBIN, b. 4 May 1841 
  7.  William D. CORBIN, b. 1839/40 or 28 Nov 1842 
  8.  Frances "Fanny" CORBIN, b. 1842/3
  9.  John CORBIN, b. 1848/9, OH; d. by 1860

One of the unnamed daughters may be:
.  Elizabeth "Eliza" CORBIN, b. ca. 1834

1a.  Marriage Index:  Maryland, 1655-1850.  Liahona Research, Orem, UT (Broderbund CD-224):

Corbin, William

Buckingham, Eliza

14 Sep 1826

Baltimore Co.

1b.  Jordan R. Dodd, ed.  1998.  Marriage Index: Ohio, 1851-1900.  Liahona Research, Orem, UT (Broderbund CD-236):

Corbin, William

Scherry, Lucinda

7 Oct 1852

Crawford Co.

1c.  LDS.  Family Search: Internet Genealogy Service:  IGI - International Genealogical Index (online at FamilySearch.org).

George Washington CORBIN Birth: 4 May 1841, Mount Sterling, Madison, Ohio Father: William CORBIN; Mother: Arminella BUCKINGHAM Source: patron submission

William D. CORBIN Birth: 28 Nov 1842, Muskingum, Ohio Father: William CORBIN; Mother: Arminella BUCKINGHAM Source: patron submission

2.  1830 Census Index and Digital Images (online at Ancestry.com; Image #67-68 of 98; extracted by Diana Gale Matthiesen):

1830

MD

Baltimore Co.

4th Ward Baltimore

p. 200

William Coburn

100 010 - 001 010

no slaves

These data indicate:

No. & Sex	Age Class	Therefore Born	Individuals Inferred
1 male	4 or under	1825-1830	= Josiah/Joseph (b. 1828)
1 male	20-29	1800-1810	= William (b. 1800)
1 female	10-14	1815-1820	= ?
1 female	20-29	1800-1810	= Arminella

This record may or may not be our subject, but I could find no other more likely.  The female born 1815-20 is too old to be their daughter.

3.  1840 Census Index and Digital Images (online at Ancestry.com; Image #7-8 of 12; extracted by Diana Gale Matthiesen):

1840

OH

Muskingum Co.

Springfield

p. 354

Wm. Corbin

101 010 100 - 120 001 000

1001000

These data indicate:

No. & Sex	Age Class	Therefore Born	Individuals Inferred
1 male	4 or under	1835-1840	= Son A
1 male	10-14	1825-1830	= Josiah/Joseph (b. 1828)
1 male	20-29	1810-1820	= ?
1 male	40-49	1790-1800	= William (b. 1800)
1 female	4 or under	1835-1840	= Daughter B
2 females	5-9	1830-1835	= Sarah Jane (b. 1833/4) = Daughter A
1 female	30-39	1800-1810	= Arminella
1	person engaged in mining
1	person engaged in manufactures and trades

The male in his 20s is too old to be their son.  Listed five lines above Thomas REESE.

4.  1850 Census Images (online at Ancestry.com; Image #42-43 of 86):  Franklin Twp., Franklin Co., OH, pp. 265B-266A, 262/273, 17 Dec 1850 (extracted by Diana Gale Matthiesen):

William Corben	40	M	Laborer		Md
Joseph    "	22	M			"
[next page]
Jane Corben	16	F			Md
George  "	12	M			O
Wm      "	10	M			"
Fanny   "	7	F			"
John    "	1	M			"
Joseph Reese	22	M	Farmer		"
Jerome W Adams	16	M			"

William appears to be lying about his age, something widows and widowers were inclinded to do, but see that he also lied in 1860.  He's 70 in the 1870 Census, and that age is more likely correct because, otherwise, William got married first at age 16, which simply didn't happen.

5.  1860 Census Images (online at Ancestry.com; Image #8-9 of 41):  Columbus P.O., Franklin Twp., Franklin Co., OH, pp. 154B-155A, PN 8-9, 58/56, enumerated 5 Jun 1860 (extracted by Diana Gale Matthiesen):

Wm Corbin	50	M		Laborer		25	Maryland
Lucinda "	35	F					Ohio
Geo W   "	20	M		Farm Laborer			"
Wm      "	18	M		Farm Laborer			"
Francis "	15	F					"
[next page]
John Sherry	13	M					Ohio
Ellen   "	8	F					"
Nancy A Corbin	6	F					"
Thomas    "	5	M					"
Ezekiel   "	2	M					"
Lewis     "	2	M					"

John and Ellen SHERRY are Lucinda's children from her previous marriage.  They are living two doors from James SHERRY (æ 40, b. Ireland) who may be a brother of  Lucinda's late husband.  Listed ten households from William's son, Josiah CORBIN, who is listed 13 households from William's daughter, Sarah Jane (CORBIN) UPDEGRAFF. 

6.  1870 Census Images (online at Ancestry.com; Image #52 of 67):  Columbus P.O., Franklin Twp., Franklin Co., OH, p. 480A, enumerated 20 Jun 1870 (extracted by Diana Gale Matthiesen).  For full record, see Christopher MOSIER's page. 

1870:  for an explanation of the column headings, please see What the Numbers in the Federal Census Mean (missing columns contained no data).
1	2	3	4	5	6	7	10	11	19
310	335	Mosier Chistopher	24	M	W	Works in Quarry	Pennsylvania	/	/
		[Christopher's wife and children]
		Carbine William	70	M	W	Domestic Servt	Maryland		/
		_______ Jerome	7	M	W		Maryland

Jerome was born in Ohio, not Maryland.  Living next door to daughter, Sarah Jane, and son, Thomas (see next record), who are living two doors from son, George.

6c.  1870 Census Images (online at Ancestry.com; Image #52 of 67):  Columbus P.O., Franklin Twp., Franklin Co., OH, p. 480A, enumerated 20 Jun 1870 (extracted by Diana Gale Matthiesen):

1870:  for an explanation of the column headings, please see What the Numbers in the Federal Census Mean (missing columns contained no data).
1	2	3	4	5	6	7	9	10	11	12	15	17	19
309	334	Fethers Andrew	37	M	W	Works on Farm	400	Baden	/	/		/	/
		_______ Sarah J	34	F	W	Keeping House		Maryland
		Updergraph V	15	M	W	at School		Ohio			/
		Carbine Thomas	14	M	W	at School		Ohio			/

Sarah has shaved two years off her age.

7.  1880 Census Images (online at Ancestry.com; Image #11 of 82):  Franklin Twp., Franklin Co., OH, p. 129A, PN 11, SD 5, ED 7, enumerated 9 Jun 1880 (extracted by Diana Gale Matthiesen):

1880:  for an explanation of the column headings, please see What the Numbers in the Federal Census Mean (missing columns contained no data).
1	2	3	4	5	6	8	9	10	13	21	24	25	26
87	87	Corbin George	W	M	38			/	Farmer		OH	MD	MD
		[George's wife and children]
		Corbin Jerome	W	M	19	half Brother	/		Laborer		OH	MD	MD
		Frazelle Charles	W	M	25	Boarder	/		Laborer		OH	VA	OH

Father William has apparently died, so the youngest child is living with his half-brother, George.  They are listed two households from Jerome's full-brother, Thomas CORBIN. 

8.  Messages in the Corbin Family Genealogy Forum (online at GenForum.com).