Mary Campbell — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Douglas-County, Oregon

Our Model Tree links this Mary Campbell across the 1920, 1930 and 1940 US Censuses in Douglas-County, Oregon (XGBoost, ~Confirmed) — first a head (b.~1864), then head of a 3-person household.

Age 76 b. ~1864 Female Head Born: Iowa Widowed

1940 Census Record Details

Census Year	1940
Location	Douglas-County, Oregon
Surname	Campbell
Given Name	Mary A.
Relationship to Head	Head
Sex	F
Color / Race	White
Age	76
Marital Status	Widowed
Birthplace	Iowa
1935 Residence (City)	West Roseburg Precinct
1935 Residence (County)	Douglas
Additional Details
Occupation	Homemaker
Industry	At home
Income (1939)	1500
Highest Grade	Hs 4
1935 Residence	Same place
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa
Occupation	Homemaker
Township / Ward	West Roseburg Precinct
Est. Birth Year	~1864

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 Mary	Age	Birth yr
Glenn Campbell	Daughter	—	16	~1924
Mary Campbell	Head	—	76	~1864
Alma Montgomery	Other	—	56	~1884

Census Appearances

1920

Douglas, Oregon

Spouse, age 56

Douglas, Oregon · implied b. ~1864 — 3 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Campbell
Given Name	Mary A
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	56
Marital Status	Married
Birthplace	Iowa
Father's Birthplace	Illinois
Mother's Birthplace	Ohio
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa

1930

Douglas, Oregon

Spouse, age 66

Douglas, Oregon · implied b. ~1864 — 2 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Campbell
Given Name	Mary A.
Relationship to Head	wife
Sex	F
Color / Race	White
Age	66
Marital Status	Married
Birthplace	Iowa
Age at First Marriage	16
Father's Birthplace	New York
Mother's Birthplace	Ohio
Occupation	none
Can Read/Write	Yes
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa

1940

Douglas-County, Oregon

Head, age 76

Douglas-County, Oregon · implied b. ~1864 — 3 household members

Surname	Campbell
Given Name	Mary A.
Relationship to Head	Head
Sex	F
Color / Race	White
Age	76
Marital Status	Widowed
Birthplace	Iowa
1935 Residence (City)	West Roseburg Precinct
1935 Residence (County)	Douglas
Occupation	Homemaker
Industry	At home
Income (1939)	1500
Highest Grade	Hs 4
1935 Residence	Same place
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa

Model Tree

Linked across censuses

Our Model Tree links Mary Campbell 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 Campbell

Head · 1940 · age 76 · b. ~1864 · Oregon

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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 — Douglas-County, Oregon Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-03360-00814)

Line	Name	Age	Relation	Occupation	Birthplace
1	Lula Lilkey	53	Lodger	Waitress	Colorado
2	Arthur L. Long	27	Head	Baker	Oregon
3	Doris F. Long	19	Wife	Housekeeper	North Dakota
4	Charles D. Reed	75	Head	Retired	Sweden
5	Ralph W. Plumer	38	Head	Laborer	Oklahoma
6	Iva E. Plumer	36	Wife	Housekeeper	Oklahoma
7	Edna L. Plumer	16	Daughter	Student	Oregon
8	Dorothy M. Plumer	12	Daughter	—	Oregon
9	Leona S. Plumer	11	Daughter	—	Oregon
10	W. Joyce Plumer	4	Daughter	—	Oregon
11	D. Ruth Plumer	1	Daughter	—	Oregon
12	Gordon B. Lang	27	Head	Logger	Oregon
13	Thelma I. Lang	24	Wife	Housekeeper	California
14	Marcia L. Lang	3	Daughter	—	California
15	Ilene V. Cooley	10	Daughter	—	California
16	Loren K. Arthur	39	Head	Salesman	Oregon
17	Dorothy L. Arthur	39	Wife	Saleslady	Michigan
18	Yvonne Gadway	22	Stepdaughter	Stenographer	Minnesota
19	Ruth L. Gadway	20	Stepdaughter	Office Work	Minnesota
20	William M. Gadway	19	Stepson	Farmer	Minnesota
21	Phyllis G. Gadway	16	Stepdaughter	Student	Minnesota
22	Richard L. Gadway	15	Stepson	Student	Minnesota
23	Darrell E. Gadway	14	Stepson	Student	Minnesota
24	Patricia M. Gadway	12	Stepdaughter	—	Minnesota
25	Ray Van Dyne	42	Head	Agent	Minnesota
26	Mary F. Van Dyne	41	Wife	Shopkeeper	Minnesota
27	Harvey D. Carey	31	Head	Laborer	Canada
28	Beulah B. Carey	26	Wife	Housekeeper	Nebraska
29	Marlyce L. Carey	3	Daughter	—	Nebraska
30	Albert W. Bashford	40	Head	Miller	Oregon
31	Ethel W. Bashford	38	Wife	Housekeeper	Minnesota
32	Robert W. Bashford	12	Son	—	Oregon
33	Donna Lee Bashford	3	Daughter	—	Oregon
34	Mary A. Campbell THIS PERSON	76	Head	Homemaker	Iowa
35	Glenn H. Patricia Campbell	16	Daughter	Student	Oregon
36	Alma M. Montgomery	56	Nurse	Nurse & Maid	Kansas
37	Levi E. White	42	Head	(Disabled War Veteran)	Arkansas
38	B. Mildred White	43	Wife	Maid	Oregon
39	William L. White	19	Son	Soldier	Oregon
40	Mildred R. White	17	Daughter	Student	Oregon

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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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