Jameson and Elizabeth died on the same day? 

— born in Morgan Co., IL:
  8.  Wilshire BANDY, b. 1828/9

— born in Morgan or Greene Co., IL:
  9.  Elenson BANDY, b. 14 Jan 1832; d. 1857, IL
10.  Rockey/Lockey BANDY, b. 1832/3 

1.  D.L. Murray & N.R. Murray, compilers.  1995. Marriage Index: IL, IN, KY, OH, TN, 1720-1926. (Broderbund CD-2):

Bandy, Jemison

Taylor, Elizabeth

8 Jul 1815

Wilson Co., TN

2.  1820 Census Index/Images (online at Ancestry.com; Image #10 of 15; extracted by Diana Gale Matthiesen):

1820

TN

Wilson Co.

Roll 122

p. 6/385

Ln. 45

Jameson Bandy

200010-30010-0-100

no slaves

These data indicate:

No. & Sex	Age Class	Therefore Born	Individuals Inferred
2 males	9 or under	1810-1820	= Franklin (b. 1820) = Son A
1 male	26-44	1775-1794	= Jameson
3 females	9 or under	1810-1820	= Daughter A = Sarah (b. 1817) = Cornelia (b. 1816)
1 female	26-44	1775-1794	= Elizabeth
1	person engaged in agriculture

Listed one line below Elisha TAYLOR, who is one line below Rebecha CRABTREE, and listed nine lines above Willshive BANDAY.

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

1830 State Census

Bardy, Jameson

IL

Morgan Co.

p. 39

"Bardy" is surely a mis-reading of "Bandy."

3b.  1830 Census Index/Images (online at Ancestry.com; extracted by Diana Gale Matthiesen):

1830

IL

Greene Co.

Unknown Twps.

Roll M19_24

p. 39

Bardy, Jameson

I did a page-by-page search of all of Greene County, and I did not find Jameson.

4.  1840 Census Index/Images (online at Ancestry.com, Image #7 of 12; extracted by Diana Gale Matthiesen):¤

1840

IL

Greene Co.

Wilmington Pct.

Roll 60

pp. 118B-119A

Ln. 10

Jameson Bandy

021 210 100 - 010 000 100

0100000

These data indicate:

No. & Sex	Age Class	Therefore Born	Individuals Inferred
2 males	5-9	1830-1835	= Elenson (b. 1831/2)
1 male	10-14	1825-1830	= Wilshire (b. 1828/9) = Marcus (b. 1826)
2 males	15-19	1820-1825	= Elisha (b. 1824) = Franklin (b. 1820)
1 male	20-29	1810-1820	= Son A
1 male	40-49	1790-1800	= James (b. 1794/5/6)
1 female	5-9	1830-1835	= Rocky (b. 1832/3)
1 female	40-49	1790-1800	= Elizabeth (b. 1794/5)
1	person employed in agriculture

5.  1850 Census Index/Images (online at Ancestry.com; Image #209 of 211):  between Macoupin & Apple Creeks, Greene Co., IL, Roll 108, p. 104A, 1410/1414, enumerated 11 Dec 1850, official enumeration date 1 Jun 1850 (extracted by Diana Gale Matthiesen):¤

Jameson Bandy	54	M		Farmer	Ky
Elizabeth "	55	F			NC
Wilshire  "	21	M		Farmer	Illinois
Elenson   "	18	M		"	"
Rocky     "	17	F			"

Yes, "Rocky" — definitely not "Lockey."  Could this have been a failed attempt to spell "Roxey," a nickname for "Roxanne" or "Roxanna"?

6.  1860 Census Index/Images (online at Genealogy.com, Image #53 of 77):  Litchfield P.O., T9N.R5W of 3rd PM, Montgomery Co., IL, Roll 214 (Book 1), p. 118, PN 118, 876/891, enumerated 23 Jun 1860, official enumeration date 1 Jun 1860 (extracted by Diana Gale Matthiesen):

Jameson Bandy	64	M		Farmer	6000	1000	Ky
Elizabeth "	64	F					NC
Nancy A Coldwell	34	F		Domestic			Tenn

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

Date	Cert. No.	Land Office	Patented By	Acres	Aliquot Sec.Twp.Rng	Meridian	State	County*
22 Apr 1835	6631	Edwardsville	Jamison Bandy, of Greene County Illinois	40	SE¼ NE¼ S23.T12N.R12W	3rd	IL	Greene
22 Apr 1835	6632	Edwardsville	Jamison Bandy, of Greene County Illinois	40	NE¼ NE¼ S13.T12N.R12W	3rd	IL	Greene
*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.

8.  Broderbund.  World Family Trees.  Vol. 22, Pedigree No. 150.  Calls Daughter No. 10, "Lockey," and says she was born in 1839.

9.  The Bandy Family Web Site by Derek Bandy.