John Kern — 1940 US Census Record

Model Tree available

1940 United States Federal Census · Benton-County, Iowa

Our Model Tree links this John Kern across the 1920, 1930 and 1940 US Censuses in Benton-County, Iowa (XGBoost, ~Confirmed), with identified parents William & Caroline — first a head (b.~1903), then head of a 4-person household.

Age 37 b. ~1903 Male Head Born: Iowa Married

1940 Census Record Details

Census Year	1940
Location	Benton-County, Iowa
Surname	Kern
Given Name	John C
Relationship to Head	Head
Sex	M
Color / Race	White
Age	37
Marital Status	Married
Birthplace	Iowa
1935 Residence (City)	R
1935 Residence (County)	Benton
Additional Details
Occupation	Farmer
Industry	Farming
Class of Worker	OA
Hours Worked	48
Income (1939)	0
Highest Grade	No 8
1935 Residence	Iowa
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa
Occupation	Farmer
Township / Ward	Leroy Twp
Est. Birth Year	~1903

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.

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

Name	Relation to head	Relative to John	Age	Birth yr
Audrey Kern	Daughter	—	10	~1930
Evelyne Kern	Spouse	—	36	~1904
John Kern	Head	—	37	~1903
William Kern	Son	—	13	~1927

Census Appearances

1920

Benton, Iowa

Son, age 19

Benton, Iowa · implied b. ~1901 — 3 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Kern
Given Name	John
Relationship to Head	Son
Sex	M
Color / Race	White
Age	19
Marital Status	Single
Birthplace	Iowa
Father's Birthplace	Iowa
Mother's Birthplace	Denmark
Occupation	Farmer
Industry	Home
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa

1930

Benton, Iowa

Head, age 29

Benton, Iowa · implied b. ~1901 — 5 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Kern
Given Name	John C.
Relationship to Head	Head
Sex	M
Color / Race	White
Age	29
Marital Status	Married
Birthplace	Iowa
Age at First Marriage	24
Father's Birthplace	Iowa
Mother's Birthplace	Denmark
Occupation	Farmer
Industry	General farm
Class of Worker	OA
Can Read/Write	Yes
Home Owned/Rented	O
Home Value / Rent	106
Radio Set	R
Veteran	No
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa

1940

Benton-County, Iowa

Head, age 37

Benton-County, Iowa · implied b. ~1903 — 4 household members

Surname	Kern
Given Name	John C
Relationship to Head	Head
Sex	M
Color / Race	White
Age	37
Marital Status	Married
Birthplace	Iowa
1935 Residence (City)	R
1935 Residence (County)	Benton
Occupation	Farmer
Industry	Farming
Class of Worker	OA
Hours Worked	48
Income (1939)	0
Highest Grade	No 8
1935 Residence	Iowa
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa

Model Tree

Model Tree available

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

Show:

Gen 1 Parents confidence ≈ 0.92

Father

William Kern

b. ~1869

Source father

● Household · direct · ~0.92

Mother

Caroline Kern

b. ~1868

Source mother

● Household · direct · ~0.92

This person

Anchor record

John Kern

Head · 1940 · age 37 · b. ~1903 · 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 — Benton-County, Iowa Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-01138-00440)

Line	Name	Age	Relation	Occupation	Birthplace
1	Gladys Voss	26	Wife	Housewife	Iowa
2	Shirley Voss	1	Daughter	—	Iowa
3	Albert Voss	49	Head	Farmer	Iowa
4	Tracy Voss	51	Wife	Housewife	Iowa
5	Delores Voss	22	Daughter	Teacher	Iowa
6	Elizabeth Voss	19	Daughter	—	Iowa
7	Clara Voss	16	Daughter	—	Iowa
8	Wilmer Kramer	23	Employee	Laborer	Iowa
9	Earl Tatge	31	Head	Farmer	Iowa
10	Dorothy Tatge	25	Wife	Housewife	Iowa
11	Keith Tatge	2	Son	—	Iowa
12	George Womrau	43	Head	Farmer	Iowa
13	Hulda Womrau	44	Wife	Housewife	Iowa
14	Merlyne Womrau	16	Son	—	Iowa
15	John C Kern THIS PERSON	37	Head	Farmer	Iowa
16	Evelyne Kern	36	Wife	Housewife	Iowa
17	William Kern	13	Son	—	Iowa
18	Audrey Kern	10	Daughter	—	Iowa
19	Elmer Tiedemann	42	Head	Farmer	Iowa
20	Mildred Tiedemann	35	Wife	Housewife	Iowa
21	Elmer Jr Tiedemann	7	Son	—	Iowa
22	Albert Mecklenburg	38	Head	Farmer	Iowa
23	Marguerite Mecklenburg	33	Wife	Housewife	Iowa
24	William Sauerteig	47	Head	Farmer	Iowa
25	Otto C Sauerteig	45	Brother	Farmer	Iowa
26	Beulah Koster	43	Employee	Housekeeper	Illinois
27	Al Koster	24	Head	Farmer	Iowa
28	Wava Koster	22	Wife	Housewife	Iowa
29	Larry Koster	2	Son	—	Iowa
30	Alpina Mader	68	Head	Farmer	Switzerland
31	Lawrence Thompson	42	Head	Farmer	Iowa
32	Christina Thompson	69	Sister	Housekeeper	Iowa
33	Anton Straka	50	Head	Farmer	Czechoslovakia
34	Frances Straka	45	Wife	Housewife	Czechoslovakia
35	Milo Straka	17	Son	Laborer	Iowa
36	Mildred Straka	15	Daughter	—	Iowa
37	Martha Straka	13	Daughter	—	Iowa
38	Stanley Straka	10	Son	—	Iowa
39	John Carter	68	Head	Farmer	Iowa
40	Josephine Carter	58	Wife	Housewife	Iowa

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Pedigree Summary

John

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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