["Artemisia" is a Greek name derived from the name of the goddess, Artemis.]

1.  Jordan R. Dodd, ed.  1993.  Illinois/Indiana Marriages:  Early to 1850.  Liahona Research, Orem, UT (Broderbund CD-228):

Willis, Edward

Shake, Parmelia

15 Nov 1849

Sullivan Co., IN

2.  Census Microfilm Records: Indiana, 1850 (Broderbund CD-302, Disk 4).  Hadden Twp., Sullivan Co., IN, p. 225, 363/365, enumerated 24 Aug 1850 (extracted by Diana Gale Matthiesen):

Edward Willis	23	M	Laborer	Inda	/
Pamelia Willis	24	F		Inda	/

"/" = married within the year.  They were both born in KY.

3.  1860 Census Images (online at Ancestry.com; Image #32 of 408):  Carlisle P.O., Haddon Twp., Sullivan Co., IN, p. 738, PN 32, 225/225, enumerated 15 Jun 1860 (extracted by Diana Gale Matthiesen):

Edward Willis	33	m		farmer	4000	1200	Ky
Permelia    "	34	f					do
John W      "	9	m					Ind
James       "	8	m					do
David       "	7	m					do
Richd        "	6	m					do
Lemuel/Samuel "	5	m					do
Wm D         "	3	m					do
Louisa      "	1	f					do

Note that "Carlisle P.O." doesn't mean they lived in the town of Carlisle.  It means that Carlisle is where they went to pick up their mail.  These were farmers, where there was no rural mail delivery.  Getting your mail meant riding/driving into town.  They lived on a farm in Haddon Twp.  Note that their post office changed in 1870, but as a farmer, it's very unlikely they moved between 1860 and 1870.  A closer post office simply opened up.

4.  1870 Census Images (online at Ancestry.com; Image #51-52 of 57):  Merom P.O., Hadden Twp., Sullivan Co., IN, pp. 118A-118B, PN 51-52, enumerated 27-28 Jul 1870 (extracted by Diana Gale Matthiesen):

1870:  for an explanation of the column headings, please see What the Numbers in the Federal Census Mean (missing columns contained no data).

1

2

3

4

5

6

7

8

9

10

13

15

17

19

387

344

Willis Edward

43

M

W

Farmer

14000

4900

Kentucky

/

______ Amelia

44

F

W

Keeping house

"

/

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Willis John W

19

M

W

Farm hand

Indiana

/

______ James

18

M

W

Farm hand

"

/

______ David

16

M

W

Farm hand

"

/

______ Richard L

15

M

W

Farm hand

"

/

______ Lemuel H

14

M

W

Farm hand

"

/

______ William W

12

M

W

"

/

______ Louisa

11

F

W

"

/

______ Fanny

9

F

W

"

/

______ Annie

7

F

W

"

/

______ George B

6

M

W

"

/

______ Minnie

2

F

W

"

______ Artemesia

1/12

F

W

"

Apr

Listed three households from Charles & Susannah (COX) TRIMBLE. 

5.  Anon.  1884.  History of Greene and Sullivan Counties, State of Indiana...  Goodspeed Bros. & Co., Chicago, IL (online in the USGenWeb archives).  On p. 763:

EDWARD WILLIS, farmer, P.O. Carlisle, was born in Jessamine County, Ky., January 10, 1827, one of ten children born to Richard and Sarah (Alsman) Willis, who came to Sullivan County in 1831, remaining residents of Haddon Township till their death, he in 1863, and she in 1865.  Our subject was raised to a life of farming and attended school but little, he not being permitted to do so except in stormy weather when he could not work.  When he was only nine years of age, he tended ten acres of corn all alone.  He remained at home until he was twenty-one and then, for two years, was engaged in cutting wood and rafting in the South.  November 15, 1849, he was married to Parmelia Shake, and twelve children blessed their union, ten of whom are living -- John W., born September 5, 1850; James, November 19, 1851; David, January 9, 1853; Richard T., July 17, 1854; Lemuel H., December 18, 1855; William D., September 9, 1857; Fannie, May 17, 1861; George B., August 15, 1864; Minnie, June 6, 1868; Artie M., April 12, 1869.  Mr. Willis began life with almost nothing, but by strict economy, industry and excellent management, has become one of the largest tax-payers of Sullivan County, owning seven hundred and eighty acres of finely improved land.  He has also raised considerable stock.  He is an A.F.&A.M., both Blue Lodge and Royal Arch Chapter; also an I.O.O.F.  Is a Democrat and takes a lively interest in all public matters.

6.  Email from Elsie Simpson:

Permelia Shake was born in 1826 and married Edward Willis in November 1849.  She was the daughter of David and Artemecia (Blevins) Shake.  They were all from Jefferson County, KY.  I have all of the Shake family material.