Mary Black — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Bronx-County, New York

Our Model Tree links this Mary Black across the 1920, 1930 and 1940 US Censuses in Bronx-County, New York (XGBoost, ~Confirmed) — first a head (b.~1884), then head of a 5-person household.

Age 56 b. ~1884 Female Head Born: New York Widowed

1940 Census Record Details

Census Year	1940
Location	Bronx-County, New York
Surname	Black
Given Name	Mary
Relationship to Head	Head
Sex	F
Color / Race	White
Age	56
Marital Status	Widowed
Birthplace	New York
1935 Residence (City)	N.Y.C.
1935 Residence (County)	Bronx
Additional Details
Highest Grade	No 8
1935 Residence	Same Place
Birth State	New York
Birth Country	United States
Birthplace (normalized)	new york
Township / Ward	Nyc
Est. Birth Year	~1884

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
Mildred Houghton	Daughter	—	30	~1910
Mary Black	Head	—	56	~1884
John Wittermann	Other	—	2	~1938
John Wittermann	Other	—	26	~1914
George Black	Son	—	26	~1914

Census Appearances

1920

Bronx, New …

Spouse, age 33

Bronx, New York · implied b. ~1887 — 6 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Black
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	33
Marital Status	Married
Birthplace	New York
Father's Birthplace	Germany
Mother's Birthplace	Germany
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Birth State	New York
Birth Country	United States
Birthplace (normalized)	new york

1930

Bronx, New …

Spouse, age 43

Bronx, New York · implied b. ~1887 — 6 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Black
Given Name	Mary E.
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	43
Marital Status	Married
Birthplace	New York
Age at First Marriage	25
Father's Birthplace	Germany
Mother's Birthplace	Germany
Can Read/Write	Yes
Birth State	New York
Birth Country	United States
Birthplace (normalized)	new york

1940

Bronx-County, New …

Head, age 56

Bronx-County, New York · implied b. ~1884 — 5 household members

Surname	Black
Given Name	Mary
Relationship to Head	Head
Sex	F
Color / Race	White
Age	56
Marital Status	Widowed
Birthplace	New York
1935 Residence (City)	N.Y.C.
1935 Residence (County)	Bronx
Highest Grade	No 8
1935 Residence	Same Place
Birth State	New York
Birth Country	United States
Birthplace (normalized)	new york

Model Tree

Linked across censuses

Our Model Tree links Mary Black 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 Black

Head · 1940 · age 56 · b. ~1884 · New York

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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 — Bronx-County, New York Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-02496-00636)

Line	Name	Age	Relation	Occupation	Birthplace
41	Janet Gibson	52	Wife	—	Scotland
42	Matthew Gibson	18	Son	—	Scotland
43	Joan Marsh	21	Daughter	Waitress	Scotland
44	Bernadict Marsh	2	In-law	—	New York
45	Harry Leahy	55	Head	Bartender	Ireland
46	Mary Leahy	51	Wife	—	Ireland
47	Eleanor Leahy	28	Daughter	Stenographer	New York
48	Harry Leahy	23	Son	Helper Boy	New York
49	Frank Leahy	22	Son	Stock Clerk	New York
50	William Kennely	69	Head	Employer	New York
51	Ellen Kennely	65	Wife	—	New York
52	Ida Abrams	57	Maid	Maid	Germany
53	Catherine Oatis	72	Lodger	—	New York
54	Louise Thather	55	Head	—	New York
55	Otto Thather	64	Brother	—	New York
56	Sarah Devlin	66	Head	—	Scotland
57	Irving G. Coth	46	Nephew	Laborer	New York
58	Mary Coth	46	Niece	—	New York
59	Monica Coth	8	Niece	—	New York
60	Edward Coth	6	Nephew	—	New York
61	Thomas Considine	60	Head	Motorman	New York
62	Mary Considine	56	Wife	—	New York
63	Edward Carr	30	Son	Fireman	New York
64	Virginia Carr	30	Daughter-in-law	—	New York
65	Robert Jester	41	Head	Porter	New York
66	Matilda Jester	39	Wife	—	New York
67	Robert Jester	20	Son	New Worker	New York
68	Walter Jester	16	Son	—	New York
69	John Jester	14	Son	—	New York
70	Louis La Rose	34	Head	—	Italy
71	Salvatore La Rose	9	Son	Barber	New York
72	Frank La Rose	70	Father	—	Italy
73	Anna La Rose	62	Mother	—	Italy
74	Mary Black THIS PERSON	56	Head	—	New York
75	George Black	26	Son	—	New York
76	John Wittermann	26	Son-in-law	Stock Clerk	New York
77	John J. Wittermann	2	Child	—	New York
78	Mildred Houghton	30	Daughter	Tel. Operator	New York
79	Caroline Mc Neill	65	Head	—	New York
80	Charles F. Mc Neill	65	Wife	Custodian	New York

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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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