Mary Nolan — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Alameda-County, California

Our Model Tree links this Mary Nolan across the 1920, 1930 and 1940 US Censuses in Alameda-County, California (XGBoost, ~Confirmed) — first a head (b.~1886), then head of a 4-person household.

Age 54 b. ~1886 Female Head Born: Alabama Divorced

1940 Census Record Details

Census Year	1940
Location	Alameda-County, California
Surname	Nolan
Given Name	Mary
Relationship to Head	Head
Sex	F
Color / Race	White
Age	54
Marital Status	Divorced
Birthplace	Alabama
1935 Residence (City)	Oakland
1935 Residence (County)	Alameda
Additional Details
Hours Worked	0
Income (1939)	0
Highest Grade	Hs 2
1935 Residence	Same House
Birth State	Alabama
Birth Country	United States
Birthplace (normalized)	alabama
Township / Ward	Oakland
Est. Birth Year	~1886

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
Mary Nolan	Head	—	54	~1886
John Nolan	Other	—	59	~1881
Donald Jackson	Other	—	6	~1934
John Nolan	Son	—	22	~1918

Census Appearances

1920

Alameda, California

Spouse, age 32

Alameda, California · implied b. ~1888 — 5 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Nolan
Given Name	Mary F.
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	32
Marital Status	Married
Birthplace	Alabama
Father's Birthplace	New York
Mother's Birthplace	Georgia
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Birth State	Alabama
Birth Country	United States
Birthplace (normalized)	alabama

1930

Alameda, California

Spouse, age 44

Alameda, California · implied b. ~1886 — 2 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Nolan
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	44
Marital Status	Married
Birthplace	Alabama
Age at First Marriage	24
Father's Birthplace	New York
Mother's Birthplace	Georgia
Can Read/Write	Yes
Birth State	Alabama
Birth Country	United States
Birthplace (normalized)	alabama

1940

Alameda-County, California

Head, age 54

Alameda-County, California · implied b. ~1886 — 4 household members

Surname	Nolan
Given Name	Mary
Relationship to Head	Head
Sex	F
Color / Race	White
Age	54
Marital Status	Divorced
Birthplace	Alabama
1935 Residence (City)	Oakland
1935 Residence (County)	Alameda
Hours Worked	0
Income (1939)	0
Highest Grade	Hs 2
1935 Residence	Same House
Birth State	Alabama
Birth Country	United States
Birthplace (normalized)	alabama

Model Tree

Linked across censuses

Our Model Tree links Mary Nolan 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 Nolan

Head · 1940 · age 54 · b. ~1886 · California

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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 — Alameda-County, California Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-00438-00130)

Line	Name	Age	Relation	Occupation	Birthplace
1	Marguerite Wiersma	6	Daughter	—	California
2	Patricia Wiersma	5	Daughter	—	California
3	Earl B Hogan	52	Head	Routing Man	California
4	Florence Hogan	44	Wife	Practical Nurse	California
5	Stanley Delong	27	Head	Switchman	California
6	Gladys Delong	26	Wife	—	Pennsylvania
7	Lynne Delong	2	Daughter	—	California
8	Manuel T. Costa	67	Head	—	Azores Islands
9	Amelia Costa	64	Wife	—	California
10	John Caskey	36	Head	Engineer	Texas
11	Elizabeth Caskey	35	Wife	—	Illinois
12	Emma Johnston	65	Head	—	Germany
13	Robert Moffatt	30	Lodger	Musician	England
14	Julia Rauline	66	Head	—	California
15	George Martin	61	Head	Porter	Louisiana
16	Mercedes Martin	48	Wife	Elevator Operator	Louisiana
17	Jean Martin	22	Daughter	—	California
18	Adolph Del Grande	49	Head	Street Dept	Italy
19	Eva Del Grande	44	Wife	—	Wisconsin
20	Marian Del Grande	3	Daughter	—	California
21	Carol Del Grande	1	Daughter	—	California
22	Claude Lyon	42	Head	Foreman	Nebraska
23	Margaret Lyon	43	Wife	—	California
24	Dorothea Lyon	16	Daughter	—	California
25	Deane Lyon	12	Son	—	Oregon
26	Nodra Lyon	12	Daughter	—	Oregon
27	Fred Scatena	46	Head	Liquor Store Proprietor	Italy
28	Edith Scatena	43	Wife	Clerk	California
29	Gloria Scatena	18	Daughter	Clerk	California
30	Serafin Furtado	62	Head	Gardner	Texas
31	Mary Furtado	61	Wife	—	California
32	Marjorie Furtado	21	Daughter	Office Work	California
33	Mary Nolan THIS PERSON	54	Head	—	Alabama
34	John M. Nolan	22	Son	Machinist Apprentice	California
35	Donald L. Jackson	6	Grandson	—	California
36	John Nolan	59	Lodger	Boiler Inspector	California
37	William Felice	46	Head	Shoe Repairing	California
38	Helen Felice	34	Wife	—	California
39	William, Sr. Felice	12	Son	—	California
40	Herbert L. Carter	37	Head	Assistant Mgr.	Illinois

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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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