Rachel Johnson — 1940 US Census Record

Model Tree available

1940 United States Federal Census · Monona-County, Iowa

Our Model Tree links this Rachel Johnson across the 1920, 1930 and 1940 US Censuses in Monona-County, Iowa (XGBoost, ~Confirmed), with identified parents Theresa — first a daughter (b.~1874), then head of a 4-person household.

Age 66 b. ~1874 Female Daughter Born: Ohio Widowed

1940 Census Record Details

Census Year	1940
Location	Monona-County, Iowa
Surname	Johnson
Given Name	Rachel
Relationship to Head	Daughter
Sex	F
Color / Race	White
Age	66
Marital Status	Widowed
Birthplace	Ohio
1935 Residence (City)	Onawa City
1935 Residence (County)	Monona
Additional Details
Highest Grade	No 8
1935 Residence	Same place
Birth State	Ohio
Birth Country	United States
Birthplace (normalized)	ohio
Township / Ward	Onawa City
Est. Birth Year	~1874

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 Rachel	Age	Birth yr
Theresa Mathys	Head	—	57	~1883
Barbara Barney	Daughter	—	42	~1898
Mary Wise	Other	—	66	~1874
Rachel Johnson	Daughter	—	66	~1874

Census Appearances

1920

Monona, Iowa

Spouse, age 47

Monona, Iowa · implied b. ~1873 — 5 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Johnson
Given Name	Rachael
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	47
Marital Status	Married
Birthplace	Ohio
Father's Birthplace	Ohio
Mother's Birthplace	Ohio
Occupation	none
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Birth State	Ohio
Birth Country	United States
Birthplace (normalized)	ohio

1930

Monona, Iowa

Other, age 56

Monona, Iowa · implied b. ~1874 — 3 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Johnson
Given Name	Rachel
Sex	F
Color / Race	White
Age	56
Marital Status	Married
Birthplace	Ohio
Age at First Marriage	16
Father's Birthplace	Ohio
Mother's Birthplace	Ohio
Can Read/Write	Yes
Birth State	Ohio
Birth Country	United States
Birthplace (normalized)	ohio

1940

Monona-County, Iowa

Daughter, age 66

Monona-County, Iowa · implied b. ~1874 — 4 household members

Surname	Johnson
Given Name	Rachel
Relationship to Head	Daughter
Sex	F
Color / Race	White
Age	66
Marital Status	Widowed
Birthplace	Ohio
1935 Residence (City)	Onawa City
1935 Residence (County)	Monona
Highest Grade	No 8
1935 Residence	Same place
Birth State	Ohio
Birth Country	United States
Birthplace (normalized)	ohio

Model Tree

Model Tree available

Our Model Tree links Rachel Johnson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Theresa Mathys (~0.50 confidence). The pedigree spans 1 generation with 1 identified ancestor.

Show:

Gen 1 Parents confidence ≈ 0.5

Mother

Theresa Mathys

b. ~1883

Source mother

● Household · direct · ~0.5

This person

Anchor record

Rachel Johnson

Daughter · 1940 · age 66 · b. ~1874 · Iowa

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Sibling

Barbara Barney

Sibling · 1940 · age 42

Source co-child of head (derived)

● Co-child · derived · ~0.88

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

Original Census Page

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

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-01184-00335)

Line	Name	Age	Relation	Occupation	Birthplace
1	Paul Phillips	12	Son	—	Iowa
2	Justin Heitges	53	Head	Owner	Iowa
3	Elizabeth Heitges	48	Wife	Owner	Iowa
4	Francis Heitges	20	Son	Salesman	Iowa
5	Eugene Heitges	13	Son	—	Iowa
6	Edward Pierson	36	Son-in-law	Partner	Iowa
7	Irene Pierson	25	Daughter	—	Iowa
8	Richard A. Pierson	3	Grandson	—	California
9	Rita Rae Pierson	1	Daughter	—	Iowa
10	Gertrude Rhode	71	Mother-in-law	—	Germany
11	Hazel Bittle	26	Housekeeper	Housekeeper	Iowa
12	Daisy Adair	26	Lodger	Book-Keeper	Tennessee
13	Theresa Mathys	57	Head	—	Iowa
14	Mary Wise	66	Sister	—	Iowa
15	Rachel Johnson THIS PERSON	66	Daughter	—	Ohio
16	Barbara Barney	42	Daughter	—	W. Virginia
17	Carl Mathiasen	41	Head	Fireman	Iowa
18	Coestallen Mathiasen	41	Wife	—	S. Dakota
19	Ethel Mathiasen	17	Daughter	—	Iowa
20	Adalene Mathiasen	15	Daughter	—	Iowa
21	Sol. Matthews	72	Head	—	Tennessee
22	Robert Crum	44	Head	River Work	Iowa
23	Flossie Crum	40	Wife	—	Missouri
24	Leolia Crum	1	Son	—	Iowa
25	Clarence Bakke	31	Head	Clerk	Iowa
26	Gracia Bakke	22	Wife	Clerical	Iowa
27	Oscar Bakke	68	Head	Proprietor	Iowa
28	Harriett Bakke	66	Wife	—	Iowa
29	Chester Persinger	72	Head	—	Ohio
30	Elmira Persinger	69	Wife	—	Illinois
31	Josephine James	35	Head	Public Health Nurse	Nebraska
32	Sadie Pracher	65	Head	—	Illinois
33	M. H. Breed	82	Head	—	Massachusetts
34	Adaline Breed	78	Wife	—	Kansas
35	Olive Breed	54	Daughter	Teacher	Kansas
36	Roy Baustian	40	Head	Assistant Engineer	Iowa
37	Irma Baustian	41	Wife	—	Iowa
38	Dorothy Baustian	18	Daughter	Secretary	Iowa
39	Harry Taylor	57	Head	Caretaker	Illinois
40	Minnie Taylor	57	Wife	—	Iowa

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Pedigree Summary

Rachel + 1 sibling

Gen 1 · 1 parents ~0.5

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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