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.~1901), then head of a 5-person household.

Age 39 b. ~1901 Female Spouse Born: Maryland Married

1940 Census Record Details

Census Year	1940
Location	Baltimore-City-County, Maryland
Surname	Brown
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	Black
Age	39
Marital Status	Married
Birthplace	Maryland
1935 Residence (City)	Baltimore City
1935 Residence (County)	Baltimore City
Additional Details
Occupation	Domestic
Industry	Private Home
Class of Worker	PW
Hours Worked	40
Income (1939)	375
Highest Grade	No 2
1935 Residence	Same place
Birth State	Maryland
Birth Country	United States
Birthplace (normalized)	maryland
Occupation	Domestic
Township / Ward	Baltimore City
Est. Birth Year	~1901

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
Serenla Brown	Daughter	—	16	~1924
Geraldine Brown	Daughter	—	10	~1930
Elizabeth Green	Head	—	50	~1890
Albert Brown	Other	—	40	~1900
Mary Brown	Spouse	—	39	~1901

Census Appearances

1920

Baltimore, Maryland

Other, age 18

Baltimore, Maryland · implied b. ~1902 — 9 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Brown
Given Name	Mary
Relationship to Head	Lodger
Sex	F
Color / Race	Black
Age	18
Marital Status	Married
Birthplace	Maryland
Father's Birthplace	Maryland
Mother's Birthplace	Maryland
Occupation	Maid
Industry	Hospital
Class of Worker	W
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Birth State	Maryland
Birth Country	United States
Birthplace (normalized)	maryland

1930

Baltimore, Maryland

Spouse, age 28

Baltimore, Maryland · implied b. ~1902 — 8 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Brown
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	Black
Age	28
Marital Status	Married
Birthplace	Maryland
Age at First Marriage	18
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 39

Baltimore-City-County, Maryland · implied b. ~1901 — 5 household members

Surname	Brown
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	Black
Age	39
Marital Status	Married
Birthplace	Maryland
1935 Residence (City)	Baltimore City
1935 Residence (County)	Baltimore City
Occupation	Domestic
Industry	Private Home
Class of Worker	PW
Hours Worked	40
Income (1939)	375
Highest Grade	No 2
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 2 locations, using XGBoost record linkage.

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This person

Anchor record

Mary Brown

Spouse · 1940 · age 39 · b. ~1901 · 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-t0627-01526-00598)

Line	Name	Age	Relation	Occupation	Birthplace
1	Robert King	43	Head	Laborer	Maryland
2	Irene King	39	Wife	Hair Dresser	Maryland
3	Sarah Wilson	73	Aunt	—	Maryland
4	William Taylor	38	Head	Laborer	Maryland
5	Carrie Taylor	38	Wife	Domestic	Maryland
6	Daniel Taylor	30	Brother	Laborer	Maryland
7	Dorothy Taylor	25	Wife	Domestic	Maryland
8	Elizabeth Green	50	Head	Domestic	Maryland
9	Albert Brown	40	Cousin	Laborer	Maryland
10	Mary Brown THIS PERSON	39	Wife	Domestic	Maryland
11	Serenla Brown	16	Daughter	—	Maryland
12	Geraldine Brown	10	Daughter	—	Maryland
13	Fred Nash	50	Head	Janitor	Maryland
14	Irene Nash	45	Wife	Domestic	Maryland
15	Stanley Nash	20	Son	Porter	Maryland
16	Zenith Rollins	51	Head	Laundress	Maryland
17	Howard Rollins	19	Son	Ironworker	Maryland
18	Florence Curtons	44	Lodger	Domestic	Maryland
19	Harry Hicks	58	Head	Laborer	Maryland
20	Lola Hicks	56	Wife	—	Maryland
21	De Sales Blowden	50	Lodger	Caretaker	Maryland
22	Pearl Blowden	48	Wife	Domestic Work	Maryland
23	Lance Knight	53	Lodger	Janitor	Maryland
24	Bertha Knight	51	Wife	Domestic	Maryland
25	William Gray	50	Head	Laborer	Maryland
26	Clara Gray	53	Wife	Laundress	Maryland
27	Wilder Gray	19	Son	Porter	Maryland
28	Vernon Gray	16	Son	—	Maryland
29	Sheffy Powell	36	Head	Teacher	Maryland
30	Lillian Powell	33	Wife	—	Maryland
31	Dorothy Powell	12	Daughter	—	Maryland
32	Darrell Powell	10	Son	—	Maryland
33	Nelson Metters	42	Head	Watchman	Maryland
34	Flora Metters	44	Wife	Laundress	Maryland
35	Julia Bowler	22	Sister-in-law	Laundress	Maryland
36	Andrew Milleker	55	Head	—	Maryland
37	Moritza Milleker	30	Daughter	Maid	Maryland
38	Andrew Milleker	28	Son	Truck Driver	Maryland
39	Almira Milleker	25	Daughter	Maid	Maryland
40	Jesse Milleker	20	Son	Helper	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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