Secondary sources give Michael's birthdate as 3 Mar 1793, but the 1850 Census indicates he was born in 1791 or 1792.

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

Christman, Michael

Bobbitt, Sally

19 Oct 1811

Christian Co.

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

1820

Chrisman, Michael

KY

Christian Co.

p. 36

2b.  Christian County Genealogical Society (Hopkinsville, KY).  1995.  Christian County, KY, Census Records, 1820-1830-1840.  Simmons Historical Publ., Melber, KY.  (Page number is page in the book, not in the census.)  On p. 11:

1820

Chrisman

Michael

000100-11010

These data indicate:

No. & Sex	Age Class	Therefore Born	Individuals Inferred
1 male	19-25*	1794-1801	= Michael (b. 1791/2/3)
1 female	9 or under	1810-1820	= Cinderella (b. 1819)
1 female	10-15	1804-1810	= ?
1 female	26-44	1775-1794	= Sarah (b. 1791/2)
*In the 1820 Census, the third column is age class 16-18 and the fourth column is age class 16-25; therefore, any individual in column three is duplicated in column four.  By subtracting the number in column three from the number in column four, you can create an age class "19-25."

This record is a little puzzling.
1)  Michael is in the wrong age class (but a man is so rarely younger than his wife, I would have to believe this census-taker had made a mistake, even if we didn't know Michael was older)
2)  The older girl is too old to be their daughter.
3)  For having been married nine (or even just five) years, it's odd to have only one child.
Living next door to Michael's brother, Jacob CHRISMAN. 

3.  1830 Census Index (online at GenealogyLibrary.com):

Christman, Michael

IL

Morgan Co.

p. 14

4.  1840 Census Index (online at GenealogyLibrary.com):

Chrisman, Michael

IL

Scott Co.

Winchester

p. 150

5.  1850 Census Index/Microfilm (online at GenealogyLibrary.com; Edgar is mis-indexed as "Edgar M. Cheesman"):  Scott Co., IL, p. 87B, enumerated 5 Dec 1850 (extracted by Diana Gale Matthiesen):

1188	1221	Michael Chrisman	58	M	Farmer	2400	NC
		Sally        "	58	F			SC
		Louisa Scott "	15	F			IL
	1222	Edgar M Chrisman	24	M	Farmer		KY
		Harriet      "	21	F			Tenn
		Margaret E   "	1	F			IL

6.  1860 Census.

7.  1870 Census.

8a.  A.B. Willhite.   [n.d.]  Christian Co., Kentucky, Tax List, 1810-1813.   (Self-published; available from author at 4396 Coopertown Rd., Russellville, KY 42276, or from the Christian County Genealogical Society, Hopkinsville, KY).  Michael CHRISMAN not found.

8b.  A.B. Willhite.   [n.d.]  Christian Co., Kentucky, Tax List, 1814-1818.   (Self-published.  This book is out of print.  I do not have a copy.  If you have one to sell, please contact me.)

8c.  A.B. Willhite.   [n.d.]  Christian Co., Kentucky, Tax List, 1819-1823.   (Self-published; available from author at 4396 Coopertown Rd., Russellville, KY 42276, or from the Christian County Genealogical Society, Hopkinsville, KY).

Pg. in Willhite	Year	First Name	Last  Name	A	B	C	D	Acres	Watercourse
15	1819	Michael, Jr	Christman	1	-	-	1	100	T W
83	1820	Michael	Christman	1	-	-	4	100	T W
125	1821	Michael	Christman	1	-	-	4	100	T W
170	1822	Michael	Christman	1	-	-	4	100	-
213	1823	Michael	Christman	1	-	-	4	100	T W
Legend for numerical data: A = White Males 21 or over; B = Blacks over 16; C = Total Blacks; D = Horses
Abbreviations:  TW = Tradewater River

9.  Anon.  1993.  Christian County, Kentucky, Wills and Estates, 1815-1823:  Christian County Will Book C.  T.L.C. Genealogy, Miami Beach, FL.
"C Court" = Christian Count Court.

p. 116

Page 472. Sale. Agreeable to an order of C Court at their Sep Term 1822, and agreeable to the nuncupative will of Nathaniel Brown deceased, we sold the decedent's estate.  Purchasers: ... Michael Chrisman ... Signed Sep 28, 1822...

10a.  Michael CHRISMAN not found in Court Order Books A or B.

10b.  James Taylor Killebrew.  1999.  County Court Order Book "C," Parts 1 & 2, Christian County, Kentucky, 1814-1819.  Christian County Genealogical Society (1101 Bethel St., Hopkinsville, KY 42240).  First column is the page number in Killebrew; second column is the page number in Court Order Book C.

p.	p.	Date	Motions
36	54	1 May 1815	Michael Chrisman, appellant against Henry Cato, Appellee On a appeal from a judgment of Jos. Clark, Esq., This day came the parties by their attornies and argument of counsel being heard it is considered by the Court that the said appeal be dismissed and that the appelee recover against the appellant his cost in this behalf expended.
194	275- 276	5 Jan 1818	On motion of Samson Thompson and it appearing to the satisfaction of the Court that he is a man of good character and will probably keep an orderly house, Licence is granted him to keep tavern at his house in this County for the space of one year from the date hereof and until the next County Court to be held for said County thereafter whereupon said Thompson with Michael Chrisman and John Renshaw his securities entered into acknowledged bond in the penalty sum of one hundred pounds according to law.

10c.  There are no Court Order Books "D" or "E"; the letters were skipped.

10d.  James Taylor Killebrew.  1999.  County Court Order Book "F," Parts 1 & 2 [but not Part 3], Christian County, Kentucky, for the years 1819-1825.  County Genealogical Society (1101 Bethel St., Hopkinsville, KY 42240).  First column is the page number in Killebrew; second column is the page number in Court Order Book F.

p.	p.	Date	Motions
317	307	3 May 1824	Ordered that William Johnston be appointed Surveyor of that part of the road leading from Hopinsville to the Highland Lick commencing at Thomas Dunkerson and continuing to William Williams in the place of Hiram wood, resigned with the following allotment of hands, to wit:  ... Michael Chrisman (1) ...
379	362	8 Mar 1825	Ordered that Timothy B. Pool be appointed Surveyor of that part of the road leading from Hopkinsville to Williamson's Mill, commencing at John Keys and continuing to said Mill and that the following hands be allotted to work on said part of said road, to wit:  ... Michael Christman (1) ...

11.  Email from Marcelle Porter (25 Jun 2000):

Michael Christman was born 3 Mar 1793 Mecklenburg Co. NC and died 25 Sep 1875 ... Sally Bobbitt married 19 Sep 1815 but the license was issued 19 Oct 1811 see Ky Marriage Records from Register of Ky Hist. Soc, Christian Co. Ky A-G.

Four years is an extraordinary lapse between the license date and the marriage date!  I would more easily believe that the records had been misread by the transcriber(s).

12.  LDS.  Family Search: Internet Genealogy Service: Pedigree Resource File.

Compact Disc #9 Michael CHRISMAN Birth: 3 Mar 1793; Place: Pendleton, Anderson, South Carolina Death: 23 Sep 1875 Father: George CHRISTMAN; Mother: Elizabeth HAGLER

I don't know where this Pendleton, Anderson Co., SC, business started, but it's all over the web — and it's wrong!

13.  LDS.  Family Search: Internet Genealogy Service: International Genealogical Index (IGI).

Michael CHRISMAN Spouse: Sally BOBBITT Marriage: 19 Sep 1815, Of, Pendleton, Anderson, South Carolina Source: none

Not only is the location wrong, there are big problems with the date.

14.  Ancestry World Trees (online at Ancestry.com).