In the 1880 census, Isaac's daughter, Sarah Jones (DAVIS) DARBY, gives both her parents' birthplaces as VA.  She is probably correct about her father, but her mother was almost certainly born in SC.

  1.  (Son A) DAVIS, b. 1784-90
  2.  (Son B) DAVIS, b. 1784-90
  3.  Henry Clark DAVIS, b. 1790/1 or 7 Feb 1792 
  4.  Isaac DAVIS, Jr., b. 1794-1800, Pendleton Co., SC 
  5.  (Son C) DAVIS, b. 1794-1800
  6.  (Son D) DAVIS, b. 1794-1800
  7.  Delilah DAVIS, b. 1794-1800, KY 
  8.  Benjamin DAVIS, b. 2 Feb 1800, Christian Co., KY 
  9.  Joseph DAVIS, b. ca. 1804 
10.  (Son E) DAVIS, b. 1800-1810 — might he be this John DAVIS?, b. 1804/5, KY 
11.  (Son F) DAVIS, b. 1800-1810
12.  Sarah Jones DAVIS, b. 18 Jul 1812, Fairview, Christian/Todd Co., KY

It's difficult to reconcile Henry's birth date and place.  In the 1850 Census, Henry is age 59, b. NC (I don't know the source of the 7 Feb 1792 birthdate, presumably his tombstone).  Henry's father was in the 1790 Census of Pendleton Co., SC, so is Henry's birthdate wrong or is the birthplace wrong — or is the census wrong?  One of them has to be.

Another Timeline:  The CLARK/DAVIS/JONES/etc. "Track" from SC/NC/TN > KY

1.  Family Group Sheet compiled by Georgie Tolleson and Betty Ann (Matthiesen) Cogliati.

2.  Marriage Record:  Isaac and Sarah are said to have married ca. 1786 in Sullivan Co., which is consistent with the location of Sarah's parents at the time.  Unfortunately, the Sullivan County Court House burned during the Civil War, and all marriage records were lost.

3.  Census Index:  U.S. Selected Counties, 1790 (Broderbund CD-311):

1790

DAVIS, Isaac

SC

Pendleton Dist.

p. 83

02-02-01-00-00

These data indicate:

Gender and Type	Age Class	Therefore Born	Individuals Inferred
2 free white males	16 and over	in or before 1774	= Isaac Sr. (b. 1765) = ?
2 free white males	15 and under	1774-1790	= Son A = Son B
1 free white females	all ages	in or before 1790	= Sarah (b. 1768)

Isaac and Sarah are too young to have a son 16+ by 1790.  Still, I don't doubt this is the correct Isaac given his neighbors (see 1790 Pendleton Co. Census Table). 

4.  Census Index:  U.S. Selected Counties, 1800 (Broderbund CD-312):  the 1800 KY census was lost, so tax lists are substituted on the CD.•

1800 Tax List

Davis, Isaac

KY

Christian Co.

5.  1810 Census Images (online at Ancestry.com; Image #56 of 66):¤•

1810

KY

Christian Co.

Roll 9

p. 107

Line 6

Isaac Davis

43301-02010-06

These data indicate:

No. & Sex	Age Class	Therefore Born	Individuals Inferred
4 males	9 or under	1800-1810	= Son F = Son E = Joseph = Benjamin (b. 1800)
3 males	10-15	1794-1800	= Son D = Son C = Isaac Jr.
3 males	16-25	1784-1794	= Henry Clark (b. 1790-92) = Son B = Son A
1 male	45 or over	in or bef. 1765	= Isaac Sr. (b. 1765)
2 females	10-15	1794-1800	= Delilah = Daughter A
1 female	26-44	1765-1784	= Sarah (b. 1768)
6 slaves	all ages	in or bef. 1810	= names unknown

Are these additional persons children of Isaac and Sarah?  Boarders?  Could the additional female be a wife of one of the sons, and the additional children be theirs?  Isaac is there in Christian Co. with his father-in-law, Henry CLARK, Sr., his brothers-in-law, Henry CLARK, Jr., Isaac CLARK, and Francis WHITESIDE, plus several other kin.

6.  Census Index:  U.S. Selected Counties, 1820 (Broderbund CD-314):  not found, but there was no Federal Census in Missouri in 1820 because it was not yet a state.

7.  Family Quest Archives:  Missouri Federal Census 1830:  Scott, New Madrid, Wayne, Callaway, Boone, Howard, Cooper, Saline, Lafayette, Clay, Jackson, Randolph, Madison, Ralls, and Ray Counties.  Heritage Quest CD M19-73 (extracted by Diana Gale Matthiesen):

1830

MO

Boone Co.

Rockyfork Twp.

p. 103A/104B

Ln. 10

Isaac Davis

000 030 101 - 000 000 001

040 000 - 201 000

On the film, pp. 103B and 104B have been interchanged — which also means to double-check any other page on the film to be certain the two sides match.  You can tell because Isaac's page includes the tally for the township.  These data indicate:

No., Race, Gender	Age Class	Therefore Born	Individuals Inferred
3 white males	20-29	1800-1810	= Son E or Son F? = Joseph = Benjamin (b. 1800)
1 white male	40-49	1780-1790	= Son A or Son B?
1 white male	60-69	1760-1770	= Isaac Sr. (b. 1765)
1 white female	60-69	1760-1770	= Sarah (b. 1768)
4 male slaves	10-23	1806-1820	= ? ? ? ?
2 female slaves	9 or under	1820-1830	= ? ?
1 female slave	24-35	1794-11806	= ?

Listed one line above Henry CAVE (Jr.), brother of Millie (CAVE) THOMPSON, and three lines below Hugh FRENCH, who is listed two lines below Elizabeth HICKS.  Also in Rockyfork Twp.:  Andrew Gibson & Sarah Jones (DAVIS) DARBY, James & Sarah (DAVIS) HICKS plus Willis, James, and Young E. HICKS, plus Abner DAVIS and Baler DAVIS. 

8.  Anon.  [n.d.]  "Death Notices:  Mary A. Thompson Spickard."  Grundy County Gazette, Grundy Co., MO.  This obituary appears to be the source of the "legend" that Sarah (CLARK) DAVIS was buried in the family graveyard on a farm later owned by the Austins (henceforth called "Austin Cemetery") in Grundy Co., MO.  But when the writer referred to Mary (THOMPSON) SPICKARD's grandmother, did he/she mean Mary's maternal grandmother or her paternal grandmother? 

9a.  Willard Rouse Jillson.  1925.  The Kentucky Land Grants. Filson Club Publ., Louisville, KY (reprinted 1994 by Genealogical Publ. Co., Baltimore, MD; online at Ancestry.com).

1803 Mar 08	Isaac Davis	Book 3	Christian Co.	W Fk Red R	200 acres
1804 May 30	Isaac Davis	Book 6	Christian Co.	W Fk Red R	200 acres

9b.  Willard Rouse Jillson.  1925.  The Kentucky Land Grants. Filson Club Publ., Louisville, KY (online at Ancestry.com; Broderbund CD-650):

Pg	Grantee / Entree	Acres	Book	Pg	Date	County	Watercourse
Old Kentucky Entries and Deeds, Chapter IV, Jefferson Entries, 1779-1785
197	Davis, Isaac	300	A	300	10-29-1783	Jefferson	Beech Fk
	Davis, Isaac	300	A	328	1-12-1784	Jefferson	Beech Fk
Part 1, Chapter IV, Grants South of Green River, 1797-1866
295	Davis, Isaac	200	3	160	3-8-1803	Christian	W Fk Red R
	Davis, Isaac	200	6	103	5-30-1804	Christian	W Fk Red R
-
-	-	-	-	-	-	-	-

 

10. Christian County, Kentucky, Tax Rolls, 1797-1816.  Heritage Quest, Microfilm No. V20-72 (extracted by Diana Gale Matthiesen):
Please note:  I have the microfilm, but not a microfilm reader.  I'm making trips to the local library and gradually getting the pages photocopied.

Year	District	Dates of Receiving Lists	Persons Names Chargeable with the Tax	Acres			Watercourse	In Whose Name Entered	In Whose Name Surveyed	In Whose Name Patented	A	B	C	D	E	F	G
				1st	2nd	3rd
1797
1798		-	-	-	-	-	-	-	-	-	-		-	-	-	-	-
1799	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
1800		-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
1801	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
1802		June 7	Davis Isaac			200	W F R R	J Davis			1			1	2
1803		May 14	David Isaac			200 200	W F R R W F R R	J Davis J Davis	Same		1		2	2	2
1804	South	Sep 19	Davis Isaac			200 200	W F R River Same	J Davis J Davis	Same Same		1		2	2	5
1805	South	Apr 7	Davis Isaac			200 200 400	W F R River Same Same	I Davis Jas Davis Sr Jas Davis Sr	Same Same Same		1		2	2	5
1806	South	Mar 29	Isaac Davis			200 200 195	W F R R Same Same	Isaac Davis James Davis Jr Jas Davis Jr	I Davis J Davis Jr J Davis Jr		1	1	2	2	5
1807	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
1808	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
1809	-	-	-	-	-	-	-	-	-	-	-		-	-	-	-	-
1810		-	-	-	-	-	-	-	-	-	-		-	-	-	-	-
1811		-	-	-	-	-	-	-	-	-	-		-	-	-	-	-
1812			-	-	-	-	-	-	-	-	-		-	-	-	-	-
1813			-	-	-	-	-	-	-	-	-		-	-	-	-	-
1814			-	-	-	-	-	-	-	-	-		-	-	-	-	-
1815			-	-	-	-	-	-	-	-	-		-	-	-	-	-
1816			-	-	-	-	-	-	-	-	-		-	-	-	-	-
Legend for numerical data [grey indicates that particular datum was not taken that year]:  1st/2nd/3rd refer to 1st Rate, 2nd Rate, or 3rd Rate land.  A = White Males 21 or over; B = White Males 16-20; C = Blacks over 16; D = Total Blacks; E = Horses & Mares (gelded male horses and female horses); F = Stud Horses (intact male horses); G = Rate of Covering (stud fee, in dollars).

There is an Isaac DAVIS on the 1797 roll, but he does not appear to be our subject (his land is in Pond Creek watershed).

11a.  Don Simmons.  1974.  Christian County, Ky., Tax Records, 1797-1798-1799.  Self-published:

Year	District	Surname	Given Name	A	B	C	D	Acres	Watercourse
1797
1798		Davis	Isaac	1		1	1
1799	2	Davis	Isaac	1		1	1
A = White males over 21; B = Blacks over 16; C = Total Blacks; D = Horses

There is an Isaac DAVIS on Pond River in 1797, but he doesn't appear to be our subject.

11b.  Don Simmons.  1978.  Christian County, KY., Tax Records, 1800-01-02-03.  Simmons Historical Publ., Melber, KY:

Year	District	Surname	Given Name	A	B	C	D	E	Acres	Watercourse
1800		Davis	Isaac	1				1
1801	South	Davis	Isaac	1			1	1
1802		Davis	Isaac	1			1	2	200	W.F.R.R.
1803		Davis	Isaac	1		2	2	2	200 200	W.F.R.R. do
A = White males over 21; B = White males 16-20; C = Blacks over age 16; D = Total Blacks; E = Horses & Cows

11a.  A.B. Willhite.  [n.d.]  Christian Co., Kentucky, Tax List, 1804-1809.  (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	Dist.*	Last  Name	First  Name	A	B	C	D	E	Acres	Watercourse
4	1804	South	Davis	Isaac	1		2	2	5	200 200 400	W W Spring Creek
34	1805	South	Davis	Isaac	1		2	2	5	200 200 400	W W W
75	1806	South	Davis	Isaac	1	2	2	2	5	200 200 195	W W W
120	1807	East	Davis	Isaac	1		2	2	6	200 195 200	W W W
162	1808	East	Davis	Isaac	1	2	2	3	7	188 200 195	W W W
210	1809	East	Davis	Isaac	1		2	4	10	200 200 195	W W W
Legend for numerical data:  A = White Males 21 or over; B = White Males 16-20 (this column not used in 1809); C = Blacks over 16; D = Total Blacks; E = Horses
Abbreviations:  W = West Fork of the Red River
*The county was divided into just two districts:  from 1804 to 1806, into North and South Districts; beginning in 1807, into East and West Districts.  The change tells us that Isaac was in the southeast quadrant of early Christian County, which later became the southwest quadrant of Todd Co., when it was formed in 1820.  This location is confirmed by the location of the West Fork of the Red River in today's southwestern Todd Co.

The Spring Creek land belongs to the next person on the list, not Isaac.

11b.  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).

Pg. in Willhite	Year	First  Name	Last  Name	A	B	C	D	E	Acres	Watercourse
13	1810	Isaac	Davis	1		2	5	11	200 200 195	W F W F W F
62	1811	Isaac	Davis	2	1	2	6	10	200 200 195	W F W F W F
113	1812	Isaac	Davis	3		2	7	10	200 195 200	W F W F W F
166	1813	Isaac	Davis	3		2	8	10	200 195 200	W F W F W F
Legend for numerical data: A = White Males 21 or over; B = White Males 16-20 (this column used only in 1811); C = Blacks over 16; D = Total Blacks; E = Horses
Abbreviations:  W F = West Fork of Red River, now in southwestern Todd Co., KY

11c.  A.B. Willhite.   [n.d.]  Christian Co., Kentucky, Tax List, 1814-1818.   (Self-published; out of print.  I do not have a copy.  If you have one to sell, please contact me.)

11d.  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).  As expected, this Isaac DAVIS was not found (because he went to Missouri in 1818).

12.  "Pendleton County Court Minutes."  South Carolina Magazine of Ancestral Research, v. 6, p. 79 (online at Ancestry.com).

Pendleton County, Nov. 8, 1790. Agreeable to law a Court was held this Day.  The Court proceeded to the drawing of a Grand Jury for next Court, when the following names were drawn, to wit... 2. John Wheeler... 5. John Davis... 8. Isaac Davis...

John WHEELER is Isaac's brother-in-law.

14.  Lon Arneld Bostick, Sr. & James Taylor Killebrew.  1985.  County Court Order Book "A" for Christian County, Kentucky for the Years 21 March 1797 - 29 August 1805...  Christian County Genealogical Society (1101 Bethel St., Hopkinsville, KY 42240).  Numbers in first column are page numbers in Bostick & Killebrew; numbers in second column are numbers in Court Order Book A.

p.	p.	Date	Motions
35	8	1799*	The Court proceeded to lay the County Levy, County Dr. to sundry Dr...		L.	S.	D.
			Isaac DAVIS	1 old wolf [apparently meaning "adult" wolf]	-	8	-
47	42	19 Nov 1800	The Court proceeded to lay the County Levy, County Dr. to Sundry Dr...		L.	S.	D.
			Isaac DAVIS	1 old wolf	-	8	-
62	76	10 Nov 1801	The Court proceeded to lay the County Levy County debts to sundry creditors...
			To Isaac DAVIS one old and one young wolf		1.84
104	191	23 Jan 1804	The Court doth recommend to James Garrad, Esq., Governor, Isaac CLARK and Isaac DAVIS as proper persons to fill the office of Justice of the Peace for Christian County and that Alexander ADAMS and J. BREATHIT be also recommended.
*The first part of the book is damaged, so the date for this motion is uncertain, but the record is sandwiched between other 1799 records.

15a.  Lon Arneld Bostick, Sr.  1987.  County Court Order Book "B" Part 1 for Christian County, Kentucky, for the years 14 Oct 1805 - 12 Sep 1809 for a County Court held at Town of Hopkinsville.  Christian County Family and History Research Society (4465 Cadiz Rd., Hopkinsville, KY 42240).  Number in first column is the page number in Bostick; number in the second column is the page number in Court Order Book B.

p.	p.	Date	Motions
138- 139	309-A	12 Jun 1809	On motion of Samuel Smith and Amos Hatcher who took the oaths of administration and entered into bond with Isaac Clark and Benjamin Reeves their securities in the sum of ten thousand dollars conditioned as the Law directs letters of administration was granted them in due form on the estate of Obadiah Hatcher deceased and that Henry Clark, Isaac Davis, Simon French and John Gilmore or any three being first sworn do appraise said estate and return an inventory thereof to our next Court.

15b.  James Taylor Killebrew.  1987.  County Court Order Book "B" Part 2 for Christian County, Kentucky, for the years Nov. 1809 - 6 June 1814 for a County Court held at Town of Hopkinsville.  Christian County Family and History Research Society (4465 Cadiz Rd., Hopkinsville, KY 42240).  Number in first column is the page number in Killebrew; number in  second column is  page number in Court Order Book B.

p.	p.	Date	Motions
93	244	9 Jun 1812	Road from Rumsey Spring to the Tennessee State line to Wit:  William and John Chester, Daniel Blue, Daniel Galbreath, Malcom Galbreath, Isaac Clark 2 hands, Henry Clark 2 hands, Isaac Davis, James Davis, Clark Davis, Tortle Galbreath 2 hands.
129	341	6 Sep 1813	Ordered that Joshua Cates be appointed surveor of that part of the Road from Hopkinsville to Clarksville Commenceing at or near Rumsey's old place and continuing to the state line and be assisted by the following hands:  Joshua Cates 7 hands, Isaac Clark 2 hands, Henry Clark 2 hands, Col. Henry Clark 2 hands, Silas McBee 3 hands, Solomon Summers 2 hands, and Isaac Davis 3 hands.

16.  Christian County Genealogical Society.  1997.  Christian County, Kentucky, Deed Abstracts of Books G-H-I (1816-1819).  Christian Co. Gen. Soc. (1101 Bethel St.), Hopkinsville, KY 42240.  On p. 124:

DBI-322, Sept. 7, 1818, from ISAAC DAVIS and SARAH, his wife, and JAMES DAVIS, to BUTLER ALLENSWORTH, for $5,000.00, 700 A., bounded by Isaac Clark's corner, E. to Creek Bank, to James Davis Survey, Gallatin Seminary Survey, S/Isaac Davis, Sarah Davis, James Davis, dower relinq., Rec. Sept. 11, 1818.

17.  William F. Switzler.  1882.  History of Boone County, Missouri.  Western Historical Co., St. Louis, MO:

On p. 1107, under the heading, "EARLY HISTORY"	Isaac DAVIS [Sr.] came from Christian county, Kentucky, to this part of Missouri in 1818, and settled two miles east of Hallsville.  His sons were James, Henry, Isaac [Jr.], Benjamin, John and Joseph.  One of Isaac [Jr.]'s sons, Joseph, now lives on the old DAVIS homestead.
On p. 1113, under the heading, "CHURCHES OF ROCKY FORK TOWNSHIP -- RED TOP (CHRISTIAN)"	The Christian church at Red Top is one of the oldest churces in this part of Missouri.  The germ or parent organization was founded October 5, 1822, with the following members: Elders -- Wm. ROBERTS, Thos. W. McBRIDE and Richard CAVE.  Deacons -- Nathan ROBERTS and Isaac DAVIS.  Members -- ... Sally DAVIS...

18.  Diagrammatic Representation of Boone County, Missouri, Plat 5:  Land Patents in Township 50 North - Range 11 West (proximate source:  a photocopy courtesy of Betty Ann (Matthiesen) Cogliati; ultimate source:  presumably the book of Original Land Patents kept by the Boone County Recorder of Deeds, as mentioned in the next source). 

24 Jan 1824	Isaac Davis	80 a	E½	NE¼	S19.T50N.R11W
3 Jan 1825	Isaac Davis	80 a	E½	SE¼	S18.T50N.R11W
28 Jul 1825	Isaac Davis	160 a		NW¼	S20.T50N.R11W

19.  Nadine Hodges, Mrs. John Vineyard, & Mrs. Howard W. Woodruff.  1968.  Missouri Pioneers: County and Genealogical Records.  14 vols.  Self-published, Kansas City, MO.  In Vol. 2, on pp. 17-18:

BOONE COUNTY - ORIGINAL LAND PATENTS
This book, un-numbered and with no identifying letter, is kept in the vault in the office of Recorder of Deeds.  This is a large book of plats...
PLAT 5...
Isaac Davis	1824

The index by Hodges et al. is very incomplete.

20.  U.S. Dept. of the Interior, Bureau of Land Management. The Official Land Patent Records Office.

Date	Certificate No.	Land Office	Patented By	Acres	Aliquot Section.Township.Range	State	County*
1 Oct 1825	1439	FRANKLIN	Isaac Davis of Boon County	91.925	E½ NE¼  S2.T49N.R12W	MO	BOONE
1 Oct 1825	1578	FRANKLIN	Isaac Davis, of Boon county	80	E½ SE¼ S18.T50N.R11W	MO	BOONE
30 Nov 1826	2011	FRANKLIN	Isaac Davis of Boon County	91.92	W½ NE¼  S2.T49N.R12W	MO	BOONE
*The county is not given on the original certificate, which describes the location of the land solely in terms of Aliquot, Section, Township, and Range.  The county names must have been added to the database at some later time, probably when the certificate data were computerized.

21.  Public Member Trees (online at Ancestry.com).

22.  WorldConnect / Ancestry World Trees (online at RootsWeb.com/Ancestry.com).

1)  Goldene Fillers Burgner.  1958/81/90.  North Carolina Land Grants in Tennessee, 1778-1791.  Original publisher unknown; reprinted 1990 by Southern Historical Press, Greenville, SC.

Year	Name	Acres	County	Watershed	Pg.
1787	Isaac Davis	125	Greene	On one of the branches of Little Gap Creek	69
1790	Isaac Davis	100	Greene	On the double Lick Fork of Lick Creek	85

2)  Bridgett Smith.  1998.  Greene Co., TN, Tax List: Muster rolls of Captain Edward Tate's Company, 1798:

Name	Land	White Polls	Black Polls	Stud Horse	Squirrel Scalps
Isaac Davis	225
James Davis	100				25