1.  Marriage Record:  not known to have married.

2.  1850 Census Every-Name-Index/Images (online at Ancestry.com, Image #1 of 160):  Caswell Co., NC, Roll M432_623, p. 178A/355, 62/63, enumerated 18 Jul 1850, official enumeration date 1 Jun 1850 (extracted by Diana Gale Matthiesen):

Thos Dunivant	44	M		Farmer		Caswell NC
Polly Dunivant	52	F				Person  "
Emmeline Fuqua	27	F				Caswell "
William J Fuqua	2	M				do    "

I don't know Emeline's exact relationship with Thomas DUNIVANT, but Emeline's maternal grandmother was a DUNIVANT, so surely he is kin of some sort. 

3.  1860 Census Every-Name-Index/Images (online at Ancestry.com, Image #128 of 153):  Yanceyville P.O., Caswell Co., NC, Roll M653_891, p. 377A/757, PN 145, 1128/1131, enumerated 20 Aug 1860, official enumeration date 1 Jun 1860 (extracted by Diana Gale Matthiesen):

Betsy Fuqua	34	F		Seamstress		25	NC
Emiline Fuqua	33	F					NC
William Fuqua	13	M					NC
Eliza Fuqua	6	F					NC
Henry Fuqua	3	M					NC
Fannie Fuqua	2	F					NC

Elizabeth "Betsy" FUQUA is Emeline's sister.  All four children are said to be Emeline's.  William and Fannie certainly are as they named Emeline FUQUA as their mother on their marriage licenses, and Eliza is because William called her "sister" in the 1880 census (see below).  Henry is not found, again, so it appears he died young.  Listed two households from Peggy FUQUA, sister of Betsy and Emeline.

4a.  1870 Census Every-Name-Index/Images (online at Ancestry.com):  Emeline not found.

4b.  1870 Census Every-Name-Index/Images (online at Ancestry.com, Image #33 of 37 — indexed "Fugada"):  Leasburg Twp., Caswell Co., NC, Roll M593_1128, p. 367A, PN 33, 263/263, enumerated 27 Jul 1870, official enumeration date 1 Jun 1870 (extracted by Diana Gale Matthiesen):

Richmond Stephen	46	M	W	Physician	2000	1000	N Carolina
________ Ann	30	F	W	Keeping house			"
________ Judy	90	F	W	No occupation			"
Fuqua William	21	M	W	Farm laborer			"

This enumerator's handwriting was atrocious.

4c.  1870 Census Every-Name-Index/Images (online at Ancestry.com, Image #2 of 56):  Yanceyville P.O., Yanceyville Twp., Caswell Co., NC, Roll M593_1128, p. 469B, PN 2, 16/16, enumerated 28 Jul/Aug 1870, official enumeration date 1 Jun 1870 (extracted by Diana Gale Matthiesen):

Dunvant Thomas	35	M	W	Farmer	16		N Carolina
_______ Elizabeth	36	F	W	Keeping house			"
_______ Henry	7	M	W	at home			"
_______ Martha	5	F	W	at home			"
Fuqua Eliza	14	F	W	at home			"
_____ Fannie	12	F	W	at home			"

Elizabeth "Betsy" (FUQUA) DUNIVANT is the children's aunt (she's fibbing about her age). 

5.  1880 Census Every-Name-Index/Images (online at Ancestry.com, Image #50 of 60):  Milton Twp., Caswell Co., NC, Roll 956, p. 246B, PN 50, SD 2, ED 15, enumerated 18/19 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

13

22

23

24

25

26

459

466

Fuqua W A

W

M

31

/

Farmer

/

/

NC

NC

NC

_____ Martha

W

F

18

Wife

/

Keeping house

/

/

NC

NC

NC

_____ Eliza

W

F

24

Sister

/

At home

/

/

NC

NC

NC

Olinger C C

W

M

25

Boarder

/

Farmer

VA

VA

VA

_______ Fanny

W

F

20

Boarder

/

At home

NC

NC

NC

Graves Anderson

W

M

17

Servant

/

Laborer

/

/

NC

NC

NC

Stephens S D

W

M

28

Boarder

/

Genl Merchandise

NC

NC

NC

Although labeled, "boarder," Fanny (FUQUA) OLINGER is also William's sister.

6.  Messages posted to the Fuqua Family Genealogy Forum (online at GenForum.com).

7.  WorldConnect / WorldTree (online at RootsWeb.com/Ancestry.com).  See especially the "Caswell County Family Tree" by the Caswell County Historical Association.