Peter Brown — 1940 US Census Record

Model Tree available

1940 United States Federal Census · Audubon-County, Iowa

Our Model Tree links this Peter Brown across the 1920, 1930 and 1940 US Censuses in Audubon-County, Iowa (XGBoost, ~Confirmed), with identified parents John & Marie — first a head (b.~1899), then head of a 6-person household.

Age 41 b. ~1899 Male Head Born: Iowa Married

1940 Census Record Details

Census Year	1940
Location	Audubon-County, Iowa
Surname	Brown
Given Name	Peter
Relationship to Head	Head
Sex	M
Color / Race	White
Age	41
Marital Status	Married
Birthplace	Iowa
1935 Residence (City)	Oakfield Twp.
1935 Residence (County)	Audubon
Additional Details
Occupation	Farming
Industry	Farm
Class of Worker	OA
Hours Worked	60
Income (1939)	0
Highest Grade	8
1935 Residence	Same place
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa
Occupation	Farming
Township / Ward	Oakfield Twp
Est. Birth Year	~1899

Household Members

Census records only state relationship to the household head. Pairwise kinship is derived (~90–95% accurate), not recorded. Step/blended families and boarders can break it.

6 people recorded at the same address in the 1940 census.

Name	Relation to head	Relative to Peter	Age	Birth yr
Marilyn Brown	Daughter	—	14	~1926
Marie Brown	Spouse	—	34	~1906
Everett Brown	Son	—	7	~1933
Margery Brown	Daughter	—	10	~1930
Earl Brown	Son	—	12	~1928
Peter Brown	Head	—	41	~1899

Census Appearances

1920

Audubon, Iowa

Son, age 21

Audubon, Iowa · implied b. ~1899 — 4 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Brown
Given Name	Peter
Relationship to Head	son
Sex	M
Color / Race	White
Age	21
Marital Status	Single
Birthplace	Iowa
Father's Birthplace	Denmark
Mother's Birthplace	Denmark
Occupation	Laborer
Industry	Home farm
Class of Worker	W
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa

1930

Audubon, Iowa

Head, age 32

Audubon, Iowa · implied b. ~1898 — 4 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Brown
Given Name	Peter
Relationship to Head	Head
Sex	M
Color / Race	White
Age	32
Marital Status	Married
Birthplace	Iowa
Age at First Marriage	25
Father's Birthplace	Denmark
Mother's Birthplace	Denmark
Occupation	Farmer
Industry	General farming
Class of Worker	O
Can Read/Write	Yes
Home Owned/Rented	R
Veteran	No
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa

1940

Audubon-County, Iowa

Head, age 41

Audubon-County, Iowa · implied b. ~1899 — 6 household members

Surname	Brown
Given Name	Peter
Relationship to Head	Head
Sex	M
Color / Race	White
Age	41
Marital Status	Married
Birthplace	Iowa
1935 Residence (City)	Oakfield Twp.
1935 Residence (County)	Audubon
Occupation	Farming
Industry	Farm
Class of Worker	OA
Hours Worked	60
Income (1939)	0
Highest Grade	8
1935 Residence	Same place
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa

Model Tree

Model Tree available

Our Model Tree links Peter Brown across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Brown (~0.92 confidence) and mother Marie Brown (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.

Show:

Gen 1 Parents confidence ≈ 0.92

Father

John Brown

b. ~1867

Source father

● Household · direct · ~0.92

Mother

Marie Brown

b. ~1877

Source mother

● Household · direct · ~0.92

This person

Anchor record

Peter Brown

Head · 1940 · age 41 · b. ~1899 · Iowa

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Confirmed / household (~0.90+) Probable / derived (~0.65–0.89) Candidate (<0.65, unverified)

Original Census Page

1940 US Federal Census — Audubon-County, Iowa Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-01137-01030)

Line	Name	Age	Relation	Occupation	Birthplace
1	Mae Littlefield	29	Wife	—	Iowa
2	Lola Mae Littlefield	6	Daughter	—	Iowa
3	Dorothy Lee Littlefield	5	Daughter	—	Iowa
4	Corrine Juanita Littlefield	1	Daughter	—	Iowa
5	Chris B. Christensen	46	Head	Farming	Denmark
6	Lillian Christensen	37	Wife	—	Iowa
7	Agnes Christensen	15	Daughter	—	Iowa
8	Bernice Christensen	13	Daughter	—	Iowa
9	Walter S. Bills	48	Head	Farming	Iowa
10	Vivian Bills	49	Wife	—	Iowa
11	Kenneth Bills	19	Son	Farm Helper	Iowa
12	Harold H. Nelson	39	Head	Farming	Denmark
13	Rica Nelson	46	Sister	—	Denmark
14	Thorvald Nelson	29	Brother	Assistant	Denmark
15	Soren Jensen	53	Head	Farming	Denmark
16	Emery Jensen	24	Son	Farming	Iowa
17	Olie Jensen	20	Son	Farm Helper	Iowa
18	Edna Jensen	19	Daughter	—	Iowa
19	Leonard Jensen	16	Son	Farm Help	Iowa
20	Peter Kragelund	57	Head	Farming	Iowa
21	Nellie Kragelund	54	Wife	—	Iowa
22	Rosittie Sorensen	50	Mother-in-law	—	Iowa
23	Peter Brown THIS PERSON	41	Head	Farming	Iowa
24	Marie Brown	34	Wife	—	Iowa
25	Marilyn Brown	14	Daughter	—	Iowa
26	Earl Brown	12	Son	—	Iowa
27	Margery Brown	10	Daughter	—	Iowa
28	Everett Brown	7	Son	—	Iowa
29	Hans C. Andersen	40	Head	Farming	Iowa
30	Emma Andersen	38	Wife	—	Iowa
31	Robert Andersen	14	Son	—	Iowa
32	Richard Andersen	11	Son	—	Iowa
33	Dorothy Andersen	10	Daughter	—	Iowa
34	Harvey Andersen	7	Son	—	Iowa
35	Kathryn Andersen	3	Daughter	—	Iowa
36	Bertha Andersen	1	Daughter	—	Iowa
37	Arthur Nielsen	29	Head	Farming	Iowa
38	Laverne Nielsen	25	Wife	—	Iowa
39	Arthur Kragelund	47	Head	Farming	Iowa
40	Sophia Kragelund	47	Wife	—	Iowa

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Pedigree Summary

Peter

Gen 1 · 2 parents ~0.92

Max depth 4 (1900–1950 window)

About This Record & Model Tree

This record was independently indexed by YourRoots from the 1940 United States Federal Census (NARA). Our Model Tree links this person across census decades using XGBoost-based record linkage, with per-link confidence scores. Household corroboration strengthens the signal when co-residents appear on the same census pages in multiple years.

Source: National Archives and Records Administration (NARA)

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