Lydia Brown — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Marshall-County, South Dakota

Our Model Tree links this Lydia Brown across the 1930 and 1940 US Censuses in Marshall-County, South Dakota (XGBoost, ~Confirmed) — first a spouse (b.~1903), then head of a 9-person household.

Age 37 b. ~1903 Female Spouse Born: South Dakota Married

1940 Census Record Details

Census Year	1940
Location	Marshall-County, South Dakota
Surname	Brown
Given Name	Lydia
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	37
Marital Status	Married
Birthplace	South Dakota
1935 Residence (City)	Buffalo Township
1935 Residence (County)	Marshall
Additional Details
Class of Worker	0
Highest Grade	No 6
1935 Residence	Same House
Birth State	South Dakota
Birth Country	United States
Birthplace (normalized)	south dakota
Township / Ward	Buffalo Township
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.

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

Name	Relation to head	Relative to Lydia	Age	Birth yr
Lloyd Brown	Son	—	20	~1920
Ruth Brown	Daughter	—	14	~1926
Walter Brown	Head	—	43	~1897
Doris Brown	Daughter	—	12	~1928
Russell Brown	Son	—	10	~1930
Daniel Brown	Son	—	17	~1923
Lydia Brown	Spouse	—	37	~1903
Phillip Brown	Son	—	8	~1932
Walter Brown	Son	—	5	~1935

Census Appearances

1930

Marshall, South …

Other, age 27

Marshall, South Dakota · implied b. ~1903 — 8 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Brown
Given Name	Lydia
Relationship to Head	Wife-H
Sex	F
Color / Race	White
Age	27
Marital Status	Married
Birthplace	South Dakota
Age at First Marriage	16
Father's Birthplace	Norway
Mother's Birthplace	Norway
Can Read/Write	Yes
Birth State	South Dakota
Birth Country	United States
Birthplace (normalized)	south dakota

1940

Marshall-County, South …

Spouse, age 37

Marshall-County, South Dakota · implied b. ~1903 — 9 household members

Surname	Brown
Given Name	Lydia
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	37
Marital Status	Married
Birthplace	South Dakota
1935 Residence (City)	Buffalo Township
1935 Residence (County)	Marshall
Class of Worker	0
Highest Grade	No 6
1935 Residence	Same House
Birth State	South Dakota
Birth Country	United States
Birthplace (normalized)	south dakota

Model Tree

Linked across censuses

Our Model Tree links Lydia Brown across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.

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This person

Anchor record

Lydia Brown

Spouse · 1940 · age 37 · b. ~1903 · South 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 — Marshall-County, South Dakota Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-03861-00909)

Line	Name	Age	Relation	Occupation	Birthplace
41	Ole O Palm	55	Head	Farmer	Sweden
42	Kenneth Gunderson	23	Head	Teacher	South Dakota
43	Walter Brown	43	Head	Farmer	South Dakota
44	Lydia Brown THIS PERSON	37	Wife	—	South Dakota
45	Lloyd Brown	20	Son	Farm Laborer	South Dakota
46	Daniel Brown	17	Son	Laborer	South Dakota
47	Ruth Brown	14	Daughter	—	South Dakota
48	Doris Brown	12	Daughter	—	South Dakota
49	Russell Brown	10	Son	—	South Dakota
50	Phillip Brown	8	Son	—	South Dakota
51	Walter Jr Brown	5	Son	—	South Dakota
52	Oscar O Nelson	52	Head	Farmer	Minnesota
53	Selma Nelson	50	Wife	—	Minnesota
54	Sanford Nelson	23	Son	Farmer	South Dakota
55	Odie Nelson	21	Son	Farm Laborer	South Dakota
56	Betty Jane Nelson	10	Daughter	—	South Dakota
57	Olie O Skogeborg	49	Head	—	Minnesota
58	Albert Skogeborg	26	Son	Farm Laborer	South Dakota
59	Sylvester Skogeborg	25	Son	Farm Laborer	South Dakota
60	Mabel Skogeborg	14	Daughter	—	South Dakota
61	Barton Skogeborg	10	Son	—	South Dakota
62	Orville Skogeborg	6	Son	—	South Dakota
63	Waldo Johnson	17	Laborer	Farm Laborer	Minnesota
64	Melvin Skoger	52	Head	Farmer	South Dakota
65	Helma Skoger	49	Wife	—	Minnesota
66	Lorene Skoger	18	Daughter	—	South Dakota
67	Leroy Skoger	16	Son	Farmer	South Dakota
68	Hazel Skoger	12	Daughter	—	South Dakota
69	Irvine Skoger	10	Son	—	South Dakota
70	Duane Skoger	3	Son	—	South Dakota
71	Darwin Valnes	33	Head	Farmer	South Dakota
72	Iola Valnes	33	Wife	—	South Dakota
73	Eldon Valnes	8	Son	—	South Dakota
74	Verlene Valnes	5	Daughter	—	South Dakota
75	Caron Rae Valnes	1	Daughter	—	South Dakota
76	Betty Q Hofer	22	Lodger	Teacher	South Dakota
77	Arthur O Aastrom	44	Head	Farmer	South Dakota
78	Ella Aastrom	36	Wife	—	South Dakota
79	Bernice Aastrom	14	Daughter	—	South Dakota
80	Ardis Aastrom	8	Daughter	—	South Dakota

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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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