1.  I have no answer for the discrepancies in the dates for the marriage records.  The bond must be procured first, before a license can be granted, after which a marriage ceremony can take place (please see my description of marriage records).  These steps are usually only separated by a day or two, if not done all on the same day.  I do not doubt that the marriage took place in 1818, despite a secondary source saying it was 1819.  The fact that the bonds were recorded chronologically in a county record book — these records are not of the bonds, themselves, which are loose pieces of paper — makes for absolutely no doubt that the bond was recorded in 1818.  It seems unlikely, in the extreme, that the marriage ceremony took place a year later. 

1a.  Christian County, Kentucky.  Bonds, 1818-1841, White.  (LDS Film No. 0465562, Item 2 — this is a film of the original bond book, not a transcription; extracted by Diana Gale Matthiesen):

9 William Teague to Mary Thompson Feb [?] 22, 1818 by Jonathan Clark

It was the ninth bond recorded in the book (bonds were numbered).  I do not know, now, why I put a question mark after "Feb" in my notes — mea culpa for poor research technique — but there does seem to be some question as to whether it was January or February.

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

Teague, William

Thompson, Mary

22 Feb 1818

Christian Co.

1c.  D.L. Murray & N.R. Murray, compilers.  1995. Marriage Index: IL, IN, KY, OH, TN, 1720-1926.  Marriage data from the "Hunting for Bears" collection (Broderbund CD-2):

Teague, Wm Jr

Thompson, Mary

20 Jan 1818

Christian Co., KY

1d.  LDS.  Family Search: Internet Genealogy Service (online):  International Genealogical Index (IGI).

WILLIAM TEAGUE Spouse:  MARY THOMPSON Marriage:  20 Jan 1818, Christian, Kentucky Source:  official temple record

2.  Census Index:  U.S. Selected Counties, 1820 (Broderbund CD-314):

1820	Teague, William	KY	Hopkins Co.	p. 266
1820	Teague, William	KY	Christian Co.	p. 29
1820	Teague, William	TN	Wilson Co.	p. 19	010211-11101

On this CD, these three are the only William Teague's in all of KY and TN.  The one in Christian Co. is known to be our subject's father, William Sr., based on his numerical data (see his page).  The William in TN is aged over 45 years, so he cannot be our subject, who is age 22 or 23.  It appears our subject is the one in Hopkins Co., but we'll need to see the numerical data to be more certain.  Given that William Sr. is said to have died in Hopkins Co. in 1837, one would have thought he was the one in Hopkins Co., but apparently not because the numbers show him to be in Christian Co. in both 1820 and 1830. 

3.  Census Index:  U.S. Selected Counties, 1830 (Broderbund CD-315):

1830 Census	Teague, William	TN	Yardin Co.	p. 15
1832 ?	Teague, William	TN	Yardin Co.

There is not now and never has been a "Yardin" Co. in Tennessee; it must be a misspelling or a misreading of Hardin.

4.  Census Index:  U.S. Selected Counties, 1840 (Broderbund CD-316).  Surnames from the mid-H's thru Z for Tennesee are missing from this CD.  Please see my WARNINGS regarding use of this and other Broderbund Census CDs, for this and other reasons. 

5.  Census Index:  U.S. Selected Counties, 1850 (Broderbund CD-317):

1850

Teague, William

TN

Fayette Co.

12th Civil District

p. 35

6.  Census Index:  U.S. Selected Counties, 1860 (Broderbund CD-318):

1860

Teague, Mary

TN

Fayette Co.

District 12

p. 87

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

Knox, Milton H.	Teague, Emily	Dec 30, 1843	Fayette Co.
Gressom, Jerome B.	Teague, Sarahann	Jul 16, 1844	Fayette Co.
Teague, William	Whitehead, Temperance	Dec 11, 1845	Fayette Co.
Price, William M.	Teague, Minerva	Jul 23, 1846	Fayette Co.
Hood, Robertson	Teage, Catharine	Oct 10, 1848	Fayette Co.

FYI:  these are all the Teague marriages in Fayette Co. on this disk.  Minerva and Catherine appear to be the daughters of William & Mary; Emily and Sarah Ann could be their daughters; William is apparently not their son.

8.   Email from Joan M. Teague (21 Aug 2000).