Mary Brown — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Allegheny-County, Pennsylvania

Our Model Tree links this Mary Brown across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a spouse (b.~1890), then head of a 5-person household.

Age 50 b. ~1890 Female Spouse Born: Scotland Married

1940 Census Record Details

Census Year	1940
Location	Allegheny-County, Pennsylvania
Surname	Brown
Given Name	Mary A.
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	50
Marital Status	Married
Birthplace	Scotland
1935 Residence (City)	Pittsburgh
1935 Residence (County)	Allegheny
Naturalization Status	Naturalized
Additional Details
Highest Grade	No 8
1935 Residence	Same place
Birth Country	Scotland
Birthplace (normalized)	scotland
Township / Ward	Pittsburgh
Est. Birth Year	~1890

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.

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

Name	Relation to head	Relative to Mary	Age	Birth yr
Elizabeth Brown	Daughter	—	16	~1924
Norma Brown	Daughter	—	14	~1926
Thomas Brown	Head	—	53	~1887
James Brown	Son	—	20	~1920
Mary Brown	Spouse	—	50	~1890

Census Appearances

1920

Allegheny, Pennsylvania

Spouse, age 30

Allegheny, Pennsylvania · implied b. ~1890 — 2 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Brown
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	30
Marital Status	Married
Birthplace	Scotland
Year of Immigration	1914
Naturalization Status	First papers filed
Father's Birthplace	Scotland
Mother's Birthplace	Scotland
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Mother Tongue	Scotch
Birth Country	Scotland
Birthplace (normalized)	scotland

1930

Allegheny, Pennsylvania

Other, age 40

Allegheny, Pennsylvania · implied b. ~1890 — 4 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Brown
Given Name	Mary
Relationship to Head	Wife-H
Sex	F
Color / Race	White
Age	40
Marital Status	Married
Birthplace	Scotland
Naturalization Status	Naturalized
Year of Immigration	1914
Age at First Marriage	28
Father's Birthplace	Scotland
Mother's Birthplace	Scotland
Can Read/Write	Yes
Mother Tongue	English
Birth Country	Scotland
Birthplace (normalized)	scotland

1940

Allegheny-County, Pennsylvania

Spouse, age 50

Allegheny-County, Pennsylvania · implied b. ~1890 — 5 household members

Surname	Brown
Given Name	Mary A.
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	50
Marital Status	Married
Birthplace	Scotland
1935 Residence (City)	Pittsburgh
1935 Residence (County)	Allegheny
Naturalization Status	Naturalized
Highest Grade	No 8
1935 Residence	Same place
Birth Country	Scotland
Birthplace (normalized)	scotland

Model Tree

Linked across censuses

Our Model Tree links Mary Brown 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 Brown

Spouse · 1940 · age 50 · b. ~1890 · Pennsylvania

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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 — Allegheny-County, Pennsylvania Open full size

Page Contents

39 people indexed on this census page (nara:1940:m-t0627-03658-00229)

Line	Name	Age	Relation	Occupation	Birthplace
1	James L. Brown	40	Head	Grass Cutter	Penna.
2	Alfred Brown	28	Son	Machinist Helper	Penna.
3	Edward T. Brown	36	Son	Baker	Penna.
4	Victoria Brown	31	Daughter	—	Penna.
5	Robert T. Brown	5	Grandson	—	Penna.
7	Nicholas C. Valenick	44	Head	Crane Operator	Penna.
8	Herman Valenick	36	Brother	—	Penna.
9	Albert Valenick	43	Brother	Chemist	Penna.
10	Joseph E. Mullen	48	Head	Puncher	Penna.
11	Frances G. Mullen	43	Wife	—	Penna.
12	Raymond T. Mullen	19	Son	Shipping Clerk	Penna.
13	Elma I. Mullen	18	Daughter	—	Penna.
14	Peter Fitzpatrick	58	Head	Helper Blacksmith	Free State Ireland
15	Bridget Fitzpatrick	58	Wife	—	Free State Ireland
16	Thomas F. Lynch	57	Head	Stationary Fireman	Free State Ireland
17	Brigid Lynch	58	Wife	—	Free State Ireland
18	Thomas F. Brown	53	Head	Ornamental Iron Draftsman	Scotland
19	Mary A. Brown THIS PERSON	50	Wife	—	Scotland
20	James W. Brown	20	Son	Messenger Boy	Penna.
21	Elizabeth B. Brown	16	Daughter	—	Penna.
22	Norma Brown	14	Daughter	—	Penna.
23	James T. Lippel	40	Head	Electrician Helper	Penna.
24	Margaret Lippel	37	Wife	—	Penna.
25	Mary L. Lippel	11	Daughter	—	Penna.
26	Margaret I. Lippel	12	Daughter	—	Penna.
27	George T. Kennerdell	57	Head	Electrician Attendant	Penna.
28	Elma A. Kennerdell	46	Wife	—	Penna.
29	Vivian I. Kennerdell	22	Daughter	Gatherer	Penna.
30	Marie E. Swigart	64	Mother-in-law	—	Penna.
31	Margaret M. Schmidt	47	Head	—	Penna.
32	George A. Schmidt	13	Son	—	Penna.
33	Evelyn M. Moral	72	Mother	—	Penna.
34	William Miller	54	Head	Machinist	Penna.
35	Eila M. Miller	53	Wife	—	Penna.
36	Bessie A. Beerman	49	Head	—	Penna.
37	Leonard Pierce	28	Roomer	Butcher	Penna.
38	Joseph W. Givens	32	Head	Salesman	Penna.
39	Mildred R. Givens	32	Wife	—	Penna.
40	Jane F. Givens	5	Daughter	—	Penna.

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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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