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

EDWARD M. WYATT Birth: 10 Jan 1837, Todd, Kentucky Father: ELI MARTIN WYATT; Mother: MARTHA KEELING Source: [patron submission]

2.  Illinois Statewide Marriage Index, 1763–1900:

Wyatt, Edward M

Fry, Nettie

Macon Co., IL

10/01/1857

3.  1860 Census Images (online at Ancestry.com; Image #177 of 563):  Murraysville Precinct, Morgan Co., IL, p. 177/499, 1243/1213, enumerated 28 Jun 1860 (extracted by Diana Gale Matthiesen):

Edward Wyatt	23	M		Farm laborer		150	Illinois
Nettie   "	23	F					"
Oscar? H "	2	M					"
Orlando  "	3/12	M					"

Living next door to Edward's father, Eli Martin WYATT. 

4.  Census Index:  U.S. Selected Counties, 1870 (Broderbund CD-319):  not found, but there are no Morgan Co. or Cass Co., IL, records on the CD.

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

Census Place: Township 17 N, Range 8 W, Cass, Illinois
Source: FHL Film 1254178; NARA Film T90178; Pg 809C
	Relation	Sex	Marr	Race	Age	Birthplace
Edward WYATT	Self	M	M	W	43	IL
Nettie WYATT	Wife	F	M	W	44	IL
Oscar WYATT	Son	M	S	W	22	IL
Orlando WYATT	Son	M	S	W	20	IL
Grant WYATT	Son	M	S	W	18	IL
Eugene WYATT	Son	M	S	W	16	IL
Edith WYATT	Dau	F	S	W	12	IL
Rolf WYATT	Son	M	S	W	8	IL
Pearl WYATT	Dau	F	S	W	2	IL

Living four doors down from Edward's brother, James L. WYATT; these are the only WYATTs in T17N.R8W. 

5b.  1880 Census Images (online at Ancestry.com; Image #35 of 40):

Additional information not given, or not given literally, on LDS CD.
Location	Enumeration Date	PN	SD	ED
T-17-[N]-R-8-W-3rd PM	21 Jun 1880	35	6	57
Husband's Occupation		farmer
Husband's Father's Birthplace		KY
Husband's Mother's Birthplace		KY
Wife's Father's Birthplace		KY
Wife's Mother's Birthplace		KY