Bertha Thomas — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Dewey-County, Oklahoma

Our Model Tree links this Bertha Thomas across the 1920, 1930 and 1940 US Censuses in Dewey-County, Oklahoma (XGBoost, ~Confirmed) — first a spouse (b.~1882), then head of a 3-person household.

Age 58 b. ~1882 Female Spouse Born: Kansas Married

1940 Census Record Details

Census Year	1940
Location	Dewey-County, Oklahoma
Surname	Thomas
Given Name	Bertha
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	58
Marital Status	Married
Birthplace	Kansas
1935 Residence (City)	Harper Township
1935 Residence (County)	Dewey
Additional Details
Highest Grade	5
1935 Residence	Same place
Birth State	Kansas
Birth Country	United States
Birthplace (normalized)	kansas
Township / Ward	Harper Township
Est. Birth Year	~1882

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.

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

Name	Relation to head	Relative to Bertha	Age	Birth yr
Harry Thomas	Son	—	37	~1903
Bertha Thomas	Spouse	—	58	~1882
Walter Thomas	Head	—	71	~1869

Census Appearances

1920

Dewey, Oklahoma

Spouse, age 39

Dewey, Oklahoma · implied b. ~1881 — 3 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Thomas
Given Name	Bertha M
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	39
Marital Status	Married
Birthplace	Kansas
Father's Birthplace	Ohio
Mother's Birthplace	Tennessee
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Birth State	Kansas
Birth Country	United States
Birthplace (normalized)	kansas

1930

Dewey, Oklahoma

Spouse, age 48

Dewey, Oklahoma · implied b. ~1882 — 4 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Thomas
Given Name	Bertha
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	48
Marital Status	Married
Birthplace	Kansas
Age at First Marriage	14
Father's Birthplace	Ohio
Mother's Birthplace	Tennessee
Occupation	none
Can Read/Write	Yes
Birth State	Kansas
Birth Country	United States
Birthplace (normalized)	kansas

1940

Dewey-County, Oklahoma

Spouse, age 58

Dewey-County, Oklahoma · implied b. ~1882 — 3 household members

Surname	Thomas
Given Name	Bertha
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	58
Marital Status	Married
Birthplace	Kansas
1935 Residence (City)	Harper Township
1935 Residence (County)	Dewey
Highest Grade	5
1935 Residence	Same place
Birth State	Kansas
Birth Country	United States
Birthplace (normalized)	kansas

Model Tree

Linked across censuses

Our Model Tree links Bertha Thomas 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 Thomas

Spouse · 1940 · age 58 · b. ~1882 · Oklahoma

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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 — Dewey-County, Oklahoma Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-03291-00121)

Line	Name	Age	Relation	Occupation	Birthplace
41	Anna Christian	54	wife	Farmer	Illinois
42	Frederica Burghardt	65	Head	—	Illinois
43	Theodore Burghardt	35	Son	Farmer	Oklahoma
44	Elmer A Weber	28	Head	Farmer	Kansas
45	Dora Weber	25	Wife	—	Oklahoma
46	Henry Weber	58	Head	Farmer	Russia
47	Lydia Weber	55	Wife	—	Kansas
48	George L Smith	46	Head	Farmer	Oklahoma
49	Martha Smith	36	Wife	—	Kansas
50	George Roy Smith	7	Son	—	Oklahoma
51	Myrtle Smith	15	Daughter	—	Oklahoma
52	Walter Thomas	71	Head	—	Illinois
53	Bertha Thomas THIS PERSON	58	Wife	—	Kansas
54	Harry Thomas	37	Son	Farmer	Oklahoma
55	John H Warden	77	Head	—	West Virginia
56	Russell Warden	24	Son	Farmer	New Mexico
57	Wilson A Warden	19	Son	—	Texas
58	Clara Warden	16	Son	—	Arkansas
59	George Warden	26	Son	—	Kansas
60	Lonnie Sanderson	40	Head	Farmer	Oklahoma
61	Iona Sanderson	38	Wife	—	Indiana
62	Norma Sanderson	11	Daughter	—	Oklahoma
63	Alma Sanderson	8	Daughter	—	Oklahoma
64	Lynn Sanderson	2	Son	—	Oklahoma
65	Hugo Gundlach	48	Head	Farmer	Illinois
66	Nellie Gundlach	41	Wife	—	Oklahoma
67	Florence Gundlach	18	Daughter	—	Oklahoma
68	Laverne Gundlach	11	Daughter	—	Oklahoma
69	Mary Gundlach	5	Daughter	—	Oklahoma
70	Harvey Gundlach	22	Son	—	Oklahoma
71	Lenora Gundlach	25	Daughter-in-law	—	Oklahoma
72	Frank Burghardt	30	Head	Farmer	Oklahoma
73	Eva Burghardt	27	Wife	—	Arkansas
74	Dora Burghardt	8	Daughter	—	Oklahoma
75	Paul Wills	52	Head	—	Missouri
76	Ethel Wills	37	Wife	—	Oklahoma
77	Delbert Wills	21	Son	Farmer	Oklahoma
78	Dale Wills	21	Son	Farmer	Oklahoma
79	James A Harper	76	Head	—	Pennsylvania
80	Mattie Harper	40	Wife	—	Tennessee

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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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