Bertha Nelson — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Custer-County, Montana

Our Model Tree links this Bertha Nelson across the 1920, 1930 and 1940 US Censuses in Custer-County, Montana (XGBoost, ~Confirmed) — first a spouse (b.~1887), then head of a 5-person household.

Age 53 b. ~1887 Female Spouse Born: Norway Married

1940 Census Record Details

Census Year	1940
Location	Custer-County, Montana
Surname	Nelson
Given Name	Bertha
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	53
Marital Status	Married
Birthplace	Norway
1935 Residence (City)	Miles City
1935 Residence (County)	Custer
Naturalization Status	Naturalized
Additional Details
Highest Grade	No 8
1935 Residence	Same Place
Birth Country	Norway
Birthplace (normalized)	norway
Township / Ward	Miles City
Est. Birth Year	~1887

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.

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

Name	Relation to head	Relative to Bertha	Age	Birth yr
June Nelson	Daughter	—	17	~1923
Theodore Nelson	Son	—	23	~1917
Stanley Nelson	Son	—	19	~1921
Bertha Nelson	Spouse	—	53	~1887
Harold Nelson	Head	—	46	~1894

Census Appearances

1920

Custer, Montana

Spouse, age 32

Custer, Montana · implied b. ~1888 — 3 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Nelson
Given Name	Bertha
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	32
Marital Status	Married
Birthplace	Norway
Year of Immigration	1911
Naturalization Status	Naturalized
Father's Birthplace	Norway
Mother's Birthplace	Norway
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Mother Tongue	Norwegian
Birth Country	Norway
Year of Naturalization	1910
Birthplace (normalized)	norway

1930

Custer, Montana

Spouse, age 43

Custer, Montana · implied b. ~1887 — 5 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Nelson
Given Name	Bertha
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	43
Marital Status	Married
Birthplace	Norway
Naturalization Status	Naturalized
Year of Immigration	1912
Age at First Marriage	27
Father's Birthplace	Norway
Mother's Birthplace	Norway
Can Read/Write	Yes
Mother Tongue	Norwegian
Birth Country	Norway
Birthplace (normalized)	norway

1940

Custer-County, Montana

Spouse, age 53

Custer-County, Montana · implied b. ~1887 — 5 household members

Surname	Nelson
Given Name	Bertha
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	53
Marital Status	Married
Birthplace	Norway
1935 Residence (City)	Miles City
1935 Residence (County)	Custer
Naturalization Status	Naturalized
Highest Grade	No 8
1935 Residence	Same Place
Birth Country	Norway
Birthplace (normalized)	norway

Model Tree

Linked across censuses

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

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This person

Anchor record

Bertha Nelson

Spouse · 1940 · age 53 · b. ~1887 · Montana

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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 — Custer-County, Montana Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-02216-00421)

Line	Name	Age	Relation	Occupation	Birthplace
1	Bonita Ballentine	9	Daughter	—	Montana
2	Bruce Ballentine	6	Son	—	Montana
3	Bryce Ballentine	6	Son	—	Montana
4	Lera Baucom	61	Aunt	—	Tennessee
5	Bryan Nelson	43	Head	Cashier	Wisconsin
6	Rosamond Nelson	43	Wife	—	Minnesota
7	Fridela Nelson	14	Daughter	—	Montana
8	Juanita Johnsrud	44	Head	—	Pennsylvania
9	Marie Johnsrud	21	Daughter	Clerk	South Dakota
10	Margaret Schermerhorn	74	Head	—	Indiana
11	William Nelson	30	Head	Asst Conservationist	Montana
12	Helen Nelson	32	Wife	—	Wisconsin
13	William R. Nelson	3	Son	—	Montana
14	Helen E. Nelson	2	Daughter	—	Montana
15	Henry Hamre	42	Head	Laborer	North Dakota
16	Laura Hamre	37	Wife	—	South Dakota
17	Alvin Hamre	15	Son	—	South Dakota
18	Vernalda Hamre	12	Daughter	—	South Dakota
19	Helen Hamre	10	Daughter	—	South Dakota
20	Leora Hamre	9	Daughter	—	South Dakota
21	Theodore Van Hoven	72	Head	—	Wisconsin
22	Mary Van Hoven	45	Daughter	—	Wisconsin
23	Margaret Van Hoven	32	Daughter	—	Wisconsin
24	Daniel J. Shea	54	Head	Stationary Engineer	Michigan
25	Kate A. Shea	49	Wife	—	Michigan
26	Kathryn Shea	24	Daughter	Clerk	Montana
27	Harold Nelson	46	Head	Main Rocker	Norway
28	Bertha Nelson THIS PERSON	53	Wife	—	Norway
29	Theodore Nelson	23	Son	Machinist Apprentice	Montana
30	Stanley Nelson	19	Son	Cream Buyer	Montana
31	June Nelson	17	Daughter	—	Montana
32	John Mcphee	48	Head	Painter	South Dakota
33	Thomas Kenney	29	Head	Steward	Nebraska
34	Edith Kenney	33	Wife	—	Montana
35	Thomas E. Kenney	9	Son	—	Montana
36	Margaret Kenney	7	Daughter	—	Montana
37	Jannie Grose	54	Head	—	Missouri
38	Thomas F. Gaskill	16	Grandson	—	Montana
39	Vernita Rae Gaskill	13	Granddaughter	—	Montana
40	James Hawkins	39	Head	Foreman	Minnesota

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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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