Barbara is said to be the mother of Susannah Katherine, but the woman living with Henry CUPP in the 1830 census was younger than Barbara.  On the other hand, if the census is in error or Barbara was fibbing about her age, then Henry had two wives, not three, and the children born after 1824 are Barbara's.

1a.  Jordan R. Dodd, ed.  1993.  Virginia Marriages:  Early to 1850.  Liahona Research, Orem, UT (Broderbund CD-229):

Cup, Henry

Baker, Susana

1 Jan 1806

Augusta Co.

1b.  LDS.  Family Search: Internet Genealogy Service: Pedigree Resource File (index to CDs, online at FamilySearch.org).

Henry CUPP Birth: 26 Oct 1780; Place: VA Death: 1867; Place: VA Father: Marcus Cupp I; Mother: Margaret Cupp Spouse: Susannah BAKER Marriage: 30 Jan 1860; Place: Shenandoah Co VA

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

Henry CUP Spouse: Susan BAKER Marriage: 30 Jan 1806, Rockingham, Virginia Source: patron submission

Henry CUP Spouse: Ann BAKER Marriage: Aug 1824, Rockingham, Virginia Source: patron submission

Elizabeth CUPP Birth: 1807, Rockingham, Virginia Father: Henry CUPP; Mother: Susannah BAKER Source: patron submission

John CUPP Birth: 1809, Rockingham, Virginia Father: Henry CUPP; Mother: Susannah BAKER Source: patron submission

Marcus CUPP Birth: 1811, Rockingham, Virginia Father: Henry CUPP; Mother: Susannah BAKER Source: patron submission

Joshua CUPP Birth: 1813, Rockingham, Virginia Father: Henry CUPP; Mother: Susannah BAKER Source: patron submission

Joshua CUPP Birth: 1813, Augusta, Virginia Father: Henry CUPP; Mother: Susannah BAKER Source: patron submission

Annie CUPP Birth: 1815, Rockingham, Virginia Father: Henry CUPP; Mother: Susannah BAKER Source: patron submission

Mc_Mergred CUPP Birth: 1818, Rockingham, Virginia Father: Henry CUPP; Mother: Susannah BAKER Source: patron submission

Mary CUPP Birth: 1820, Rockingham, Virginia Father: Henry CUPP; Mother: Susannah BAKER Source: patron submission

Samuel CUPP Birth: 1822, Rockingham, Virginia Father: Henry CUPP; Mother: Susannah BAKER Source: patron submission

2.  1810

3.  1820 Census Index and Digital Images (online at Ancestry.com; Image #9 of 53; extracted by Diana Gale Matthiesen):¤•

1820

VA

Rockingham Co.

p. 128A

Ln. 16

Cupp Henry

210010-21010-0-100

no slaves

These data indicate:

No. & Sex	Age Class	Therefore Born	Individuals Inferred
2 males	9 or under	1810-1820	= Joshua (b. 1815/6) = Marcus (b. 1811)
1 male	10-15	1804-1810	= John (b. 1809)
1 male	26-44	1775-1794	= Henry (b. 1780)
2 females	9 or under	1810-1820	= McMergred (b. 1818) = Annie (b. 1815)
1 female	10-15	1804-1810	= Elizabeth (b. 1806)
1 female	26-44	1775-1794	= Susannah (b. 1786)
1	person engaged in agriculture

List is alphabetical, so no neighborhood reconstruction is possible.

4.  1830 Census Index and Digital Images (online at Ancestry.com; Image #35-36 of 182; extracted by Diana Gale Matthiesen):¤•

1830

VA

Rockingham Co.

p. 204

Ln. 10

Henry Cupp

200 210 100 - 012 010 000

no slaves

These data indicate:

No. & Sex	Age Class	Therefore Born	Individuals Inferred
2 males	4 or under	1825-1830	= Son B = Son A
2 males	15-19	1810-1815	= Joshua (b. 1815/6) = Marcus (b. 1811)
1 male	20-29	1800-1810	= John (b. 1809)
1 male	40-49	1780-1790	= Henry (b. 1780)
1 female	5-9	1820-1825	= Mary (b. 1820)
2 females	10-14	1815-1820	= McMergred (b. 1818) = Annie (b. 1815)
1 female	20-29	1800-1810	= Ann

5.  1840 Census Index and Digital Images (online at Ancestry.com; Image #102-103 of 167; extracted by Diana Gale Matthiesen):¤•

1840

VA

Rockingham Co.

pp. 98B-99A

Ln. 3

Henry Cupp

001 020 010 - 020 120 100

0300000

no slaves

These data indicate:

No. & Sex	Age Class	Therefore Born	Individuals Inferred
1 male	10-14	1825-1830	= Son A or B
2 males	20-29	1810-1820	= Joshua (b. 1815/6) = Marcus (b. 1811)
1 male	50-59	1780-1790	= Henry (b. 1780)
2 females	5-9	1830-1835	= Martha (b. 1832/3) = Susannah (b. 1830)
1 female	15-19	1820-1825	= Mary (b. 1820)
2 females	20-29	1810-1820	= McMergred (b. 1818) = Annie (b. 1815)
1 female	40-49	1790-1800	= Barbara (b. 1792/3)
3	persons engaged in agriculture

6.  1850 Census Index/Images (online at Ancestry.com; Image #2 of 25 — mis-linked in the search engine):  District No. 6, German Twp., Allen Co., OH, p. 303A/605, 976/976, enumerated 22 Aug 1850 (extracted by Diana Gale Matthiesen):¤•

Henry Cupp	70	m	Farmer	3000	Virginia
Barbara "	57	f			"
Martha  "	17	f			"
David Stover	21	m	Laborer		"

7.  1860 Census Images (online at Ancestry.com; Image #3 of 34):  Lima P.O., German Twp., Allen Co., OH, p. 292A/583, PN 63, 461/447, enumerated 19 Jun 1860 (extracted by Diana Gale Matthiesen):

H Cupp	82	M		None		500	?a
B	65	F					"

Listed next to married daughter, Martha Jane (CUPP) COCHRAN. 

8.  Broderbund.  World Family Trees.  Vol. 25, Pedigree #1709.

9.  Messages in the Cupp Family Genealogy Forum (online at GenForum.com).