1.  Marriage Record:

2.  1850 Census Index/Images (online at Ancestry.com; Image #30 of 42):  7th Election Dist., Worcester Co., MD, p. 178B, 28/30, enumerated 12 Sep 1850, official enumeration date 1 Jun 1850 (extracted by Diana Gale Matthiesen):

John B Corbin	24	M		Merchant	5000	Md
Sarah J   "	23	F				Va
John W B  "	10/12	M				Md
Tabitha Bacon	12	F				"
Levin J CORBIN	16	M		Merchant		"
Mary Hauvan/Hanvan	24	F	M			"

John is Levin's brother.

3.  1860 Census Images (online at Ancestry.com; Image #10 of 26):  Snow Hill P.O., Atkinsons District, Worcester Co., MD, p. 600, PN 93, 660/657, enumerated 11 Jul 1860, official enumeration date 1 Jun 1860 (extracted by Diana Gale Matthiesen):

Levin Corbin	25	M		Farmer		285	Maryland
Sarah H Corbin	50	F			2800	300	"
Eliza "	30	F					"
Thomas "	15	M					"

Sarah is Levin's mother; Eliza and Thomas are Levin's siblings.  Living next door to Levin's brother, John B. CORBIN, on one side; and, in the other direction, living two doors from Margaret CORBIN.

4.  1870 Census Images (online at Ancestry.com; Image #5 of 34):  Snow Hill P.O., 7th Election District, Worcester Co., MD, p. ?, PN 1, 6/6, enumerated 2 Jul 1870, official enumeration date 1 Jun 1870 (extracted by Diana Gale Matthiesen):

Corbin Eliza	40	F	W	K House	1500	1000	Maryland
______ Levin	37	M	W	Farmer			"
______ Thomas	30	M	W	Works on Farm			"
______ Evaline	16	F	B	Domestic			"

Eliza and Thomas are Levin's siblings.  Living next door to Elizabeth TOWNSEND, on one side; and, in the other direction, living two doors down from Levin's brother, John B. CORBIN.

5.  1880 United States Census and National Index (LDS Family History Resource File: CD-ROM Library):

Census Place: Atkinsons, Worcester, Maryland
Source: FHL Film 1254518; NARA Film T9-0518; Pg 346D
	Relation	Sex	Marr	Race	Age	Birthplace	Occupation	Fa	Mo
Eliza Q. CORBIN	Self	F	S	W	52	MD	Keeping House	MD	MD
Leoin J. CORBIN	Brother	M	S	W	46	MD	Works On Farm	MD	MD
George QUINTON	Other	M	S	MU	10	MD	Servant	MD	MD