Clara Johnson — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Mercer-County, North Dakota

Our Model Tree links this Clara Johnson across the 1920, 1930 and 1940 US Censuses in Mercer-County, North Dakota (XGBoost, ~Confirmed) — first a spouse (b.~1890), then head of a 4-person household.

Age 50 b. ~1890 Female Spouse Born: Wisconsin Married

1940 Census Record Details

Census Year	1940
Location	Mercer-County, North Dakota
Surname	Johnson
Given Name	Clara
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	50
Marital Status	Married
Birthplace	Wisconsin
1935 Residence (City)	T 144 R 89
1935 Residence (County)	Mercer
Additional Details
Class of Worker	0
Highest Grade	No 8
1935 Residence	Same place
Birth State	Wisconsin
Birth Country	United States
Birthplace (normalized)	wisconsin
Township / Ward	T 144 R 89
Est. Birth Year	~1890

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 Clara	Age	Birth yr
James Johnson	Head	—	52	~1888
Robert Johnson	Son	—	14	~1926
James Johnson	Son	—	19	~1921
Clara Johnson	Spouse	—	50	~1890

Census Appearances

1920

Mercer, North …

Spouse, age 30

Mercer, North Dakota · implied b. ~1890 — 7 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Johnson
Given Name	Clara
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	30
Marital Status	Married
Birthplace	Wisconsin
Father's Birthplace	Norway
Mother's Birthplace	Norway
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Birth State	Wisconsin
Birth Country	United States
Birthplace (normalized)	wisconsin

1930

Mercer, North …

Spouse, age 40

Mercer, North Dakota · implied b. ~1890 — 10 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Johnson
Given Name	Clara
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	40
Marital Status	Married
Birthplace	Wisconsin
Age at First Marriage	18
Father's Birthplace	Norway
Mother's Birthplace	Norway
Can Read/Write	Yes
Birth State	Wisconsin
Birth Country	United States
Birthplace (normalized)	wisconsin

1940

Mercer-County, North …

Spouse, age 50

Mercer-County, North Dakota · implied b. ~1890 — 4 household members

Surname	Johnson
Given Name	Clara
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	50
Marital Status	Married
Birthplace	Wisconsin
1935 Residence (City)	T 144 R 89
1935 Residence (County)	Mercer
Class of Worker	0
Highest Grade	No 8
1935 Residence	Same place
Birth State	Wisconsin
Birth Country	United States
Birthplace (normalized)	wisconsin

Model Tree

Linked across censuses

Our Model Tree links Clara Johnson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.

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This person

Anchor record

Clara Johnson

Spouse · 1940 · age 50 · b. ~1890 · North Dakota

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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 — Mercer-County, North Dakota Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-03007-00191)

Line	Name	Age	Relation	Occupation	Birthplace
1	Tofel Manning	29	Head	Miner	N Dak
2	Melida Manning	24	Wife	—	N Dak
3	Joan Manning	2	Daughter	—	N Dak
4	Allen Luder	30	Head	Miner	Wisconsin
5	Irena Luder	26	Wife	—	N Dak
6	Shirley Luder	3	Daughter	—	N Dak
7	Edward Quier	38	Head	Miner	Russia
8	Paulina Quier	32	Wife	—	S Dak
9	Carl Joey	31	Head	Laborer	N Dak
10	Martha Joey	27	Wife	—	N Dak
11	Harold Joey	7	Son	—	N Dak
12	Calvin Joey	5	Son	—	N Dak
13	Ralph Joey	1	Son	—	N Dak
14	Karolina Hoffman	61	Head	Laborer	Russia
15	Richard Hoffman	18	Son	Laborer	N Dak
16	John Hoffman	14	Son	—	N Dak
17	James Johnson	52	Head	Laborer	Wisconsin
18	Clara Johnson THIS PERSON	50	Wife	—	Wisconsin
19	James Johnson	19	Son	Laborer	N Dak
20	Robert Johnson	14	Son	—	N Dak
21	Adam Oster	61	Head	Laborer	Russia
22	Regina Oster	55	Wife	—	Russia
23	Rollind Oster	31	Son	Laborer	N Dak
24	Julius Oster	21	Son	Coal Laborer	N Dak
25	Edwin Oster	16	Son	—	N Dak
26	Emil Dachoch	38	Head	Laborer	N Dak
27	Emma Dachoch	34	Wife	—	N Dak
28	Loreen Dachoch	14	Daughter	—	N Dak
29	Viola Dachoch	13	Daughter	—	N Dak
30	Harold Dachoch	11	Son	—	N Dak
31	Howard Dachoch	10	Son	—	N Dak
32	Rosella Dachoch	8	Daughter	—	N Dak
33	Virginia Dachoch	6	Daughter	—	N Dak
34	John Kircher	37	Head	Farmer	Russia
35	Pauline Kircher	34	Wife	—	S Dak
36	Albert Kircher	13	Son	—	N Dak
37	Lorraine Kircher	11	Daughter	—	N Dak
38	Elmer Kircher	5	Son	—	N Dak
39	Matthias Kircher	37	Head	Farmer	Russia
40	Anna Kircher	32	Wife	—	Russia

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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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