Mary Davidson — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Trumbull-County, Ohio

Our Model Tree links this Mary Davidson across the 1920, 1930 and 1940 US Censuses in Trumbull-County, Ohio (XGBoost, ~Confirmed) — first a head (b.~1870), then head of a 3-person household.

Age 70 b. ~1870 Female Head Born: Wales Widowed

1940 Census Record Details

Census Year	1940
Location	Trumbull-County, Ohio
Surname	Davidson
Given Name	Mary
Relationship to Head	Head
Sex	F
Color / Race	White
Age	70
Marital Status	Widowed
Birthplace	Wales
1935 Residence (City)	Mineral Ridge
1935 Residence (County)	Trumbull
Naturalization Status	Naturalized
Additional Details
Highest Grade	No 8
1935 Residence	Same place
Birth Country	Wales
Birthplace (normalized)	wales
Township / Ward	Mineral Ridge
Est. Birth Year	~1870

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
Helen Meiger	Daughter	—	35	~1905
Ilona Meiger	Daughter	—	5	~1935
Mary Davidson	Head	—	70	~1870

Census Appearances

1920

Trumbull, Ohio

Spouse, age 52

Trumbull, Ohio · implied b. ~1868 — 4 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Davidson
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	52
Marital Status	Married
Birthplace	Wales
Year of Immigration	1870
Naturalization Status	Naturalized
Father's Birthplace	Wales
Mother's Birthplace	Wales
Occupation	none
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Mother Tongue	Welsh
Birth Country	Wales
Year of Naturalization	un
Birthplace (normalized)	wales

1930

Trumbull, Ohio

Head, age 62

Trumbull, Ohio · implied b. ~1868 — 3 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Davidson
Given Name	Mary
Relationship to Head	Head
Sex	F
Color / Race	White
Age	62
Marital Status	Widowed
Birthplace	Wales
Naturalization Status	Naturalized
Year of Immigration	1871
Age at First Marriage	30
Father's Birthplace	Wales
Mother's Birthplace	Wales
Can Read/Write	Yes
Mother Tongue	Welsh
Home Owned/Rented	O
Home Value / Rent	2500
Birth Country	Wales
Birthplace (normalized)	wales

1940

Trumbull-County, Ohio

Head, age 70

Trumbull-County, Ohio · implied b. ~1870 — 3 household members

Surname	Davidson
Given Name	Mary
Relationship to Head	Head
Sex	F
Color / Race	White
Age	70
Marital Status	Widowed
Birthplace	Wales
1935 Residence (City)	Mineral Ridge
1935 Residence (County)	Trumbull
Naturalization Status	Naturalized
Highest Grade	No 8
1935 Residence	Same place
Birth Country	Wales
Birthplace (normalized)	wales

Model Tree

Linked across censuses

Our Model Tree links Mary Davidson 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 Davidson

Head · 1940 · age 70 · b. ~1870 · Ohio

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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 — Trumbull-County, Ohio Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-03159-00572)

Line	Name	Age	Relation	Occupation	Birthplace
1	Ethel R. Grafton	22	Wife	Telephone Operator	Ohio
2	Herbert Grafton	27	Head	Laborer	Ohio
3	Irene Grafton	24	Wife	—	Ohio
4	Thomas Watkins	83	Head	—	Wales
5	Sarah J. Watkins	69	Wife	—	Ohio
6	Edith J. Watkins	17	Daughter	—	Ohio
7	Cyril Harshman	77	Head	—	Ohio
8	Lucy R. Harshman	79	Sister	—	Ohio
9	Willard Harshman	46	Head	Truck Driver	Ohio
10	Lida Harshman	40	Wife	—	Ohio
11	Mary Harshman	4	Daughter	—	Ohio
12	Cyril Harshman	8	Son	—	Ohio
13	Cora E. Harshman	1	Daughter	—	Ohio
14	Luther S. Bell	67	Head	Loader	Pennsylvania
15	Robert Bloom	42	Head	Shearman	Indiana
16	Ruth Bloom	37	Wife	—	Pennsylvania
17	Robert S. Bloom	11	Son	—	Ohio
18	Henry Bell	39	Head	Truck Driver	Ohio
19	Catherine Bell	26	Wife	Winder	Ohio
20	George Hanna	31	Head	Furnisher	Ohio
21	Agnes Hanna	31	Wife	—	Ohio
22	Georganne Hanna	10	Daughter	—	Ohio
23	Edward Hanna	4	Son	—	Ohio
24	Joan Hanna	10	Niece	—	Ohio
25	Peggy Hanna	6	Niece	—	Ohio
26	Floyd Lancaster	62	Head	—	Ohio
27	Eva Lancaster	61	Wife	—	West Virginia
28	Gradelle Lancaster	17	Daughter	—	Ohio
29	Donald Lancaster	27	Son	Laborer	Ohio
30	Pearl Lancaster	24	Daughter-in-law	Lamp Worker	Ohio
31	Bertha Breeze	47	Head	—	Ohio
32	Charles H. Breeze	16	Son	—	Ohio
33	Mary Davidson THIS PERSON	70	Head	—	Wales
34	Helen Meiger	35	Daughter	Taper	Ohio
35	Ilona J. Meiger	5	Daughter	—	Ohio
36	Frank Harshman	41	Head	Lumber Dealer	Ohio
37	Virginia Harshman	23	Wife	—	Ohio
38	June A. Harshman	1	Daughter	—	Ohio
39	Rooser Jenkins	62	Head	Machinist	Ohio
40	Winifred Jenkins	65	Wife	—	Ohio

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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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