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

Joell R. HILL Spouse: Elmyra MC BEE Marriage: 1852, Cape Girardeau, Missouri Source: Marriage Records, 1805-1950. Cape Girardeau County (Missouri). Recorder of Deeds

Joel R. HILL Father: Ezekiel HILL; Mother: Rachel BLOUNT Marriage: 03 Oct 1852, Jackson, Cape Girardeau, Missouri Spouse: Elmira MCBEE Source: patron submission

2a.  1850 Census Every-Name-Index/Images (online at Ancestry.com, Image #33 of 292):  District 14, Cape Girardeau Co., MO, Roll M432_394, p. 357A, 217/226, enumerated 15 Aug 1850, official enumeration date 1 Jun 1850 (extracted by Diana Gale Matthiesen):

Hezekiah Hall	41	M		Carpenter		NC
M A       "	39	F				Mo
James E   "	17	M		"		"
S E J     "	29	M		"		"
Joel R Hill	17	M		"		"
M A     "	7	F				"

M.A. HALL is Mary Ann (HILL) HALL, Joel's sister.  S.E.J. should be surnamed HILL because he's Joel's widowed brother, Simeon E. J. HILL; the child, M.A. HILL, is presumably Simeon's.

2b.  1850 Census Every-Name-Index/Images (online at Ancestry.com):  Elmira McBEE (æ 19, b. TN) and her brother, Anderson McBEE (æ 11, b. TN), are living in Grainger Co., TN, with their parents, William P. McBEE (æ 47, b. TN) & Nancy (æ 40, b. TN).  

3.  1860 Census Every-Name-Index/Images (online at Ancestry.com):  can't find, and I really looked, including page-by-page searches of Cape Girardeau and Apple Creek Twps.  Anderson McBEE (æ 21, b. TN) is living with James Ellison & Sarah E. (McBEE) HALL, who are listed next to Joel's sister, Mary Ann (HILL) HALL. 

4.  1870 Census Every-Name-Index/Images (online at Ancestry.com, Image #64-65 of 66):  Appleton P.O., Apple Creek Twp., Cape Girardeau Co., MO, Roll 765, pp. 33A-33B, PN 65-66, 378/362, enumerated 20 Jul 1870, official enumeration date 1 Jun 1870 (extracted by Diana Gale Matthiesen):

Hill Joel	37	M	W	Farmer		225	Mo
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____ Elmira	39	F	W	keeps house			Tenn
____ William	16	M	W	farm hand			Mo
____ Tabitha	9	F	W	at home			"
____ John	5	M	W				"
____ Andrew	1	M	W				"
McBee Anderson	29	M	W	farm hand			Tenn

Anderson McBEE is Elmira's brother.  Listed next to Joel's sister, Dorcas (HILL) GODWIN, who is two households from Joel's sister, Mary Ann (HILL) HALL.

5.  1880 Census Every-Name-Index/Images (online at Ancestry.com):  not found, unless he's the John HILL in Stoddard Co., MO.