It's unclear what her given name was intended to be, but Oannah is a cognate of Joannah.

1.  Marriage Record:

2.  1840 Census Index/Images (online at Ancestry.com, Image #27 of 52; extracted by Diana Gale Matthiesen):¤•

1840

VA

Grayson Co.

Western Dist.

Roll 556

p. 315

Ln. 29

Herrel CARRICO

000 010 - 000 010

no slaves

0100000

These data indicate:

No. & Sex	Age Class	Therefore Born	Individuals Inferred
1 male	20-29	1810-1820	= Harold (b. 1818)
1 female	20-29	1810-1820	= Oramer (b. 1817/8)
1	person employed in agriculture

3.  1850 Census Every-Name-Index/Images (online at Ancestry.com, Image #112-113 of 148 — indexed "Camis"):  District 19, Grayson Co., VA, Roll M432_947, pp. 214B-215A, 771/771, enumerated 28 Sep 1850, official enumeration date 1 Jun 1850 (extracted by Diana Gale Matthiesen):¤•

Harold Carrico	32	M		Farmer	200	Virginia
[next page]
Oramer? Carrico	32	F				Virginia
Stephen O Carrico	10	M				Do
Julia Ann Carrico	8	F				Do
Elizabeth C Carrico	4	F				Do
Jarvis H Carrico	2	M				Do

Listed next to Harold's presumed brother, Stephen CARRICO.

4.  1860 Census Every-Name-Index/Images (online at Ancestry.com, Image #8 of 196):  Independence P.O., Grayson Co., VA, Roll M653_1348, p. 8, PN 8, 56/52, enumerated 28 Jun 1860, official enumeration date 1 Jun 1860 (extracted by Diana Gale Matthiesen):¤•

Herald Carrico	43	M		Farmer	850	300	Va
Peter Carrico	88	M		Farmer			Va
O Carrico	43	F					Va
Stephen C  "	20	M					Va
Julia Ann   "	17	F					Va
Elizabeth C "	15	F					Va
James M     "	11	M					Va
Frances E   "	3	F					Va
Wiley       "	5	M					Va
Catharine   "	70	F	B	Laborer			Va

Peter is Harold's father.  Surely James M. is Jarvis H.  So, did the enumerator mis-read his own field notes when entering the data on the Population Schedules?  Catharine is Peter's freed slave.  Listed next to Harold's presumed brother, Stephen CARRICO.

5.  1870 Census Every-Name-Index/Images (online at Ancestry.com, Image #47 of 53 — indexed "Caraes"):  Ironton P.O., Fayette Twp., Lawrence Co., OH, Roll M593_1231, p. 319A, PN 47, 365/365, enumerated 20 Jul 1870, official enumeration date 1 Jun 1870 (extracted by Diana Gale Matthiesen):¤•

Caraco Herald	54	M	W	Works on farm	500	150	Va US
______ Owano	54	F	W	Keeps House			Va US
______ Jarvis	21	M	W	Works on farm			Va US
______ Alfred W	14	M	W	At School			Va US

This enumerator's handwriting was exceptionally clear.

6.  1880 Census Every-Name-Index/Images (online at Ancestry.com, Image #19 of 46):  Fayette Twp., Lawrence Co., OH, Roll T9_1039, p. 98B, PN 22, SD 4, ED 86, enumerated 9 Jun 1880, official enumeration date 1 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

11

13

24

25

26

212

213

Carico Hereld

W

M

51

/

Farmer

VA

VA

______ Oanner

W

F

52

Wife

/

Keeps house

VA

VA

______ Jarvises H

W

M

30

Son

/

Farm laborer

VA

VA

VA

______ Alferd W

W

M

23

Son

/

Farm laborer

VA

VA

VA

Oannah has shaved a decade off her age.

7.  1890 Census:  the 1890 Census Population Schedules were destroyed.

8.  1900 Census Every-Name-Index/Images (online at Ancestry.com, Image #8 of 24):  Fayette Twp., Fayette Pct., Lawrence Co., OH, Roll T623_1292, p. 70B, SH 4, SD 9, ED 68, 8/9 Jun 1900, official enumeration date 1 Jun 1900 (extracted by Diana Gale Matthiesen):¤•

1900:  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	8	9	10	11	12	13	14	15	19	20	22	23	24	25	26	27	28
68	69	Carrico Wiley	Head	W	M	Mar 1853	47	M	5			OH	VA	OH	Farmer	0	Y	Y	Y	O	F	F	58
		_______ Rosa	Wife	W	F	May 1876	24	M	5	1	1	OH	VA	VA	Keeping House		Y	N	Y
		Carrico Harold	Father	W	M	Feb 1818	82	M	60			VA	VA	VA			Y	Y	Y
		_______ Oanah	Mother	W	F	Nov 1822	77	M	60			VA	SC	VA			Y	Y	Y

Oannah has shaved five or six years off her age.

9.  1910 Census Every-Name-Index/Images (online at Ancestry.com):  not found.

10.  WorldConnect / Ancestry World Trees (online at RootsWeb.com/Ancestry.com).