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

1850 Census	Vanaustin, William	OH	Marion Co.	Marion	p. 72
1851	Vanaustin, William	OH	Marion Co.	Marion

2.  Census Index:  U.S. Selected Counties, 1860 (Broderbund CD-318):  no Ohio records on this CD.

3a.  Family Quest Archives:  Ohio 1870 Census Index.  Heritage Quest ACD-0014:

Surname	Given name	Age	Sex	Race	Birth Place	County	Locality	Roll	Page
VANOSTAN	WM H	41	M	W	NY	MARION	MARION TWP	1241	75

3b.  NARA.  1965.  Population Schedules of the Ninth Census of the united States, 1870, Roll 1240, Ohio, Volume 39 (1-213): Marion County.  Microcopy No. 593.  National Archives Microfilm Publications, Washington, DC (Family Quest Archives:  Ohio Federal Census 1870:  Marion County.  Heritage Quest  CD M593-1240:  Marion P.O., Marion Twp., Marion Co., OH, p. 75A, 88/88, enumerated 16 Aug 1870 (extracted by Diana Gale Matthiesen):

Van Ostan Wm H	41	M	W	Farmer	800	New York
_________ Marilla	35	F	W	Keeping House		Ohio
_________ Ellen A.	17	F	W			do
_________ Chas. D.	16	M	W			do
_________ Louis H.	14	M	W			do
_________ Horace P.	13	M	W			do
_________ Floyd E.	11	M	W			do
_________ Iden O.	9	M	W			do
_________ Basil B	7	M	W			do
_________ Willie? B.	5	M	W			do
_________ Joseph H.	3	M	W			do
_________ Viola	8/12	F	W			do	Sept

The month for Viola is in the column labeled: "If born within the year, state month (Jan., Feb., etc.)."  If Viola was born with the last 12 months and in Sept, she had to have been born in Sept 1869, but that would make her 11 months old, not eight months old, so go figure.  Her death record says she was born in 1870.

4.  Ohio Genealogical Society.  1991.  Index to the 1880 Federal Population Census for the State of Ohio.  (Broderbund  CD-20).

1880

Vanostin, W??

OH

Marion Co.

Marion Wards 2 & 3

p. 201A

5.  1900 Census, Ohio:  Marion and Medina Counties (Heritage Quest, Family Quest Archives, CDT623-1302):  S.D. 12, E.D. 59, Main St., Ward 2, Marion City, Marion Twp., Marion Co., OH, p. 117B, 84/84, enumerated 4-5 Jun 1900 (extracted by Diana Gale Matthiesen).  For an explanation of the column headings, please see What the Numbers in the Federal Census Mean. 

3

4

5

6

7

8

9

10

11

12

13

14

15

19

20

22

23

24

25

26

27

Van Osten Wm H

Head

W

M

Mar 1831

69

M

48

New York

New York

New York

Tailor

0

Yes

Yes

Yes

0

M

H

_________ Marrilla

Wife

W

F

May 1833

67

M

48

12

9

Ohio

Canada

Ohio

Yes

Yes

Yes

_________ Zelie

Son

W

M

June 1862

37

M

4

Ohio

Ohio

New York

Tailor

0

Yes

Yes

Yes

_________ Josephine

Dau in Law

W

F

Feb 1866

34

M

4

1

1

Montana

Indiana

Indiana

Yes

Yes

Yes

_________ Zela

Grand dau

W

F

Feb 1898

2

S

Montana

Ohio

Montana

Yes

No

Yes

The census-taker has switched the birthplaces of Zelie's parents, and I'll bet the granddaughter was born in Ohio, not Montana.

6.  LDS.  Family Search: Internet Genealogy Service:  IGI - International Genealogical Index (online at FamilySearch.org).

Horace G VAN OSTEN Birth: 06 Nov 1857, Marion, Ohio Father: William H VAN NORTSTRAND; Mother: Marilla BRIDGE Source: none given

7.  Marshall, Maxine, ed.  [nd]  Marion County, Ohio, Death Records, 1867-1880, Volume I.  Marion Area Genealogical Society, P.O. Box 844, Marion, OH 43302 (online at Alan Potts Heritage Pursuit web site).

Name	Death Date	Age	Place of Death	Place of Birth	Father	Mother	Cause
VAN OSTEN, Viola	02/00/78	8Y	Marion	Marion			Fever

8.  American Genealogical-Biographical Index (online at Ancestry.com):

BRIDGE

Marilla B.

Genealogy of the John Bridge Family by Will Dawson Bridge, Cambridge, Mass., 1924, p. 346.

Iden's mother was Marilla BRIDGE, so this source is obviously worth tracking down because it probably gives her ancestry and obviously gives at least some of her descendants.