Mary Brown — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Baltimore-City-County, Maryland

Our Model Tree links this Mary Brown across the 1920, 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed) — first a spouse (b.~1886), then head of a 6-person household.

Age 54 b. ~1886 Female Spouse Born: Maryland Married

1940 Census Record Details

Census Year	1940
Location	Baltimore-City-County, Maryland
Surname	Brown
Given Name	Mary E.
Relationship to Head	Wife
Sex	F
Color / Race	Black
Age	54
Marital Status	Married
Birthplace	Maryland
1935 Residence (City)	Baltimore City
1935 Residence (County)	Baltimore City
Additional Details
Industry	0
Highest Grade	No 3
1935 Residence	Same Place
Birth State	Maryland
Birth Country	United States
Birthplace (normalized)	maryland
Township / Ward	Baltimore City
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.

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

Name	Relation to head	Relative to Mary	Age	Birth yr
Vera Brown	Daughter	—	13	~1927
John Brown	Head	—	56	~1884
Howard Brown	Son	—	9	~1931
John Brown	Son	—	15	~1925
Lawrence Brown	Son	—	11	~1929
Mary Brown	Spouse	—	54	~1886

Census Appearances

1920

None, Maryland

Other, age 35

None, Maryland · implied b. ~1885 — 3 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Brown
Given Name	Mary
Relationship to Head	Boarder
Sex	F
Color / Race	Black
Age	35
Marital Status	Married
Birthplace	Maryland
Father's Birthplace	Maryland
Mother's Birthplace	Maryland
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Birth State	Maryland
Birth Country	United States
Birthplace (normalized)	maryland

1930

Baltimore, Maryland

Spouse, age 44

Baltimore, Maryland · implied b. ~1886 — 5 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Brown
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	Black
Age	44
Marital Status	Married
Birthplace	Maryland
Age at First Marriage	24
Father's Birthplace	Maryland
Mother's Birthplace	Maryland
Can Read/Write	Yes
Birth State	Maryland
Birth Country	United States
Birthplace (normalized)	maryland

1940

Baltimore-City-County, Maryland

Spouse, age 54

Baltimore-City-County, Maryland · implied b. ~1886 — 6 household members

Surname	Brown
Given Name	Mary E.
Relationship to Head	Wife
Sex	F
Color / Race	Black
Age	54
Marital Status	Married
Birthplace	Maryland
1935 Residence (City)	Baltimore City
1935 Residence (County)	Baltimore City
Industry	0
Highest Grade	No 3
1935 Residence	Same Place
Birth State	Maryland
Birth Country	United States
Birthplace (normalized)	maryland

Model Tree

Linked across censuses

Our Model Tree links Mary Brown across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage.

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This person

Anchor record

Mary Brown

Spouse · 1940 · age 54 · b. ~1886 · Maryland

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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 — Baltimore-City-County, Maryland Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-01534-00405)

Line	Name	Age	Relation	Occupation	Birthplace
1	Rosie Mcdonough	31	Lodger	—	Maryland
2	Maggie Frank	35	Lodger	—	Maryland
3	Elmer Bumbaugh	45	Head	Laborer	Virginia
4	Joseph G. Caskey	37	Head	Chef	Virginia
5	Marie Caskey	29	Wife	—	Virginia
6	Edith Caskey	12	Daughter	—	Maryland
7	Hilda Caskey	9	Daughter	—	Maryland
8	Phyllis Caskey	7	Daughter	—	Maryland
9	Doris Caskey	5	Daughter	—	Maryland
10	Mary Taylor	49	Mother	—	Virginia
11	Walter Evants	32	Head	Paper Hanger	Maryland
12	Marie Spriggs	25	Partner	—	Maryland
13	Marie Besser	11	Daughter	—	Maryland
14	Elma Spriggs	22	Sister-in-law	Maid	Maryland
15	Thomas Johnson	50	Head	Car Washer	Maryland
16	Ruth Whitney	38	Lodger	Maid	Maryland
17	Helen Whitney	19	Daughter	—	Maryland
18	Leon Whitney	3	Son	—	Maryland
19	John Whitney	5	Son	—	Maryland
20	Joseph Whitney	1	Son	—	Maryland
21	Maggie Other	50	Head	—	Maryland
22	Raymond Other	50	Husband	Laborer	Maryland
23	Marie Bruce	24	Daughter	Maid	Maryland
24	James Adams	55	Head	Laborer	Maryland
25	Katie Adams	54	Wife	—	Maryland
26	John Brown	56	Head	Laborer	Maryland
27	Mary E. Brown THIS PERSON	54	Wife	—	Maryland
28	John H. Brown	15	Son	—	Maryland
29	Vera L. Brown	13	Daughter	—	Maryland
30	Lawrence Brown	11	Son	—	Maryland
31	Howard L. Brown	9	Son	—	Maryland
32	William Brown	48	Head	Polisher	Maryland
33	Alberta Brown	50	Wife	Maid	Maryland
34	William Vanderhill	41	Head	Own Business	Virginia
35	Florence Vanderhill	39	Wife	Maid	Virginia
36	Sol Herbert	18	Head	Laborer	Virginia
37	May D. Herbert	15	Daughter	—	Maryland
38	Geneva Herbert	8	Daughter	—	Maryland
39	Henrietta Mitchell	62	Head	Laundress	Maryland
40	Alga J. Diggs	29	Daughter	—	Maryland

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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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