Mary Larson — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Marshall-County, Minnesota

Our Model Tree links this Mary Larson across the 1920, 1930 and 1940 US Censuses in Marshall-County, Minnesota (XGBoost, ~Confirmed) — first a spouse (b.~1874), then head of a 4-person household.

Age 66 b. ~1874 Female Spouse Born: Minnesota Married

1940 Census Record Details

Census Year	1940
Location	Marshall-County, Minnesota
Surname	Larson
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	66
Marital Status	Married
Birthplace	Minnesota
1935 Residence (City)	Huntly Township
1935 Residence (County)	Marshall
Additional Details
Highest Grade	No 5
1935 Residence	Same place
Birth State	Minnesota
Birth Country	United States
Birthplace (normalized)	minnesota
Township / Ward	Huntly Township
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 Mary	Age	Birth yr
Ione Larson	Head	—	69	~1871
Edwin Ellefson	Other	—	31	~1909
Ludwick Larson	Son	—	48	~1892
Mary Larson	Spouse	—	66	~1874

Census Appearances

1920

Marshall, Minnesota

Spouse, age 47

Marshall, Minnesota · implied b. ~1873 — 5 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Larson
Given Name	Maria
Relationship to Head	wife
Sex	F
Color / Race	White
Age	47
Marital Status	Married
Birthplace	Minnesota
Father's Birthplace	Norway
Mother's Birthplace	Norway
Occupation	none
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Mother Tongue	Norwegian
Birth State	Minnesota
Birth Country	United States
Birthplace (normalized)	minnesota

1930

Marshall, Minnesota

Spouse, age 56

Marshall, Minnesota · implied b. ~1874 — 3 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Larson
Given Name	Marie
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	56
Marital Status	Married
Birthplace	Minnesota
Age at First Marriage	18
Father's Birthplace	Norway
Mother's Birthplace	Norway
Can Read/Write	Yes
Birth State	Minnesota
Birth Country	United States
Birthplace (normalized)	minnesota

1940

Marshall-County, Minnesota

Spouse, age 66

Marshall-County, Minnesota · implied b. ~1874 — 4 household members

Surname	Larson
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	66
Marital Status	Married
Birthplace	Minnesota
1935 Residence (City)	Huntly Township
1935 Residence (County)	Marshall
Highest Grade	No 5
1935 Residence	Same place
Birth State	Minnesota
Birth Country	United States
Birthplace (normalized)	minnesota

Model Tree

Linked across censuses

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

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This person

Anchor record

Mary Larson

Spouse · 1940 · age 66 · b. ~1874 · Minnesota

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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 — Marshall-County, Minnesota Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-01936-00478)

Line	Name	Age	Relation	Occupation	Birthplace
41	Melsa R Brenna	10	Daughter	—	Minnesota
42	Warren J Brenna	2	Son	—	Minnesota
43	Anthony Brenna	27	Brother	Younger Labor	Minnesota
44	Iver J Nelson	66	Head	Farming	Norway
45	Ingeborg M Nelson	61	Wife	—	Norway
46	Conrad J Nelson	22	Son	Labor	Minnesota
47	Rudolph Stenberg	12	Grandson	—	Minnesota
48	Conrad O Nelson	48	Head	Farming	Sweden
49	Signe B Nelson	35	Wife	—	Minnesota
50	Leona S Nelson	11	Daughter	—	Minnesota
51	Verne S Nelson	9	Son	—	Minnesota
52	Leroy B Nelson	7	Daughter	—	Minnesota
53	Adell E Nelson	4	Daughter	—	Minnesota
54	Roger Nelson	23	Nephew	Farm Labor	Minnesota
55	Zakarias O Embury	28	Lodger	Labor	Minnesota
56	William Johnson	32	Head	Farming	Minnesota
57	Otilia Johnson	31	Wife	—	Minnesota
58	Lester P Johnson	5	Son	—	Minnesota
59	Curtis W Johnson	2	Son	—	Minnesota
60	Ida J Nelson	61	Head	—	Sweden
61	Joseph Nelson	21	Son	Farming	Minnesota
62	Walter Nelson	19	Son	Farming	Minnesota
63	Asper B Isaacson	71	Head	Farming	Norway
64	Laura Isaacson	68	Wife	—	Minnesota
65	Lawrence Isaacson	33	Son	Labor	Minnesota
66	Clarence M Isaacson	27	Son	Labor	Minnesota
67	Rodger G Isaacson	18	Son	—	Minnesota
68	Carl Lausnes	75	Head	Farming	Norway
69	John Lausnes	64	Brother	Farming	Norway
70	Ione Larson	69	Head	Farming	Norway
71	Mary Larson THIS PERSON	66	Wife	—	Minnesota
72	Ludwick J Larson	48	Son	Retail Lumber Yard	Minnesota
73	Edwin L Ellefson	31	Lodger	Labor	Minnesota
74	August Martinson	61	Head	Farming	Sweden
75	Mary Martinson	65	Wife	—	Sweden
76	Malhont Lindling	23	Boarder	Truck Driver	Minnesota
77	John Kalishko	37	Head	Farming	Minnesota
78	Annie Kalishko	78	Wife	—	Germany
79	Arthur L Olds	47	Brother in Law	Common Labor	Iowa
80	Thannie Olds	40	Sister	—	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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