Mary Black — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Marion-County, Indiana

Our Model Tree links this Mary Black across the 1920, 1930 and 1940 US Censuses in Marion-County, Indiana (XGBoost, ~Confirmed) — first a spouse (b.~1902), then head of a 7-person household.

Age 38 b. ~1902 Female Spouse Born: Tennessee Married

1940 Census Record Details

Census Year	1940
Location	Marion-County, Indiana
Surname	Black
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	Black
Age	38
Marital Status	Married
Birthplace	Tennessee
1935 Residence (City)	Indianapolis
1935 Residence (County)	Marion
Additional Details
Industry	0
Class of Worker	0
Highest Grade	No 4
1935 Residence	Same place
Birth State	Tennessee
Birth Country	United States
Birthplace (normalized)	tennessee
Township / Ward	Indianapolis
Est. Birth Year	~1902

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.

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

Name	Relation to head	Relative to Mary	Age	Birth yr
Frances Black	Daughter	—	11	~1929
Mary Black	Daughter	—	4	~1936
Betty Black	Daughter	—	12	~1928
Georgia Black	Daughter	—	16	~1924
William Black	Head	—	42	~1898
William Black	Son	—	1	~1939
Mary Black	Spouse	—	38	~1902

Census Appearances

1920

Marion, Indiana

Spouse, age 21

Marion, Indiana · implied b. ~1899 — 4 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Black
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	Black
Age	21
Marital Status	Married
Birthplace	Tennessee
Father's Birthplace	Tennessee
Mother's Birthplace	Tennessee
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Birth State	Tennessee
Birth Country	United States
Birthplace (normalized)	tennessee

1930

Marion, Indiana

Other, age 28

Marion, Indiana · implied b. ~1902 — 5 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Black
Given Name	Mary
Relationship to Head	Wife-H
Sex	F
Color / Race	Black
Age	28
Marital Status	Married
Birthplace	Tennessee
Age at First Marriage	19
Father's Birthplace	Tennessee
Mother's Birthplace	Tennessee
Occupation	Dayworker
Industry	House work
Class of Worker	W
Can Read/Write	Yes
Birth State	Tennessee
Birth Country	United States
Birthplace (normalized)	tennessee

1940

Marion-County, Indiana

Spouse, age 38

Marion-County, Indiana · implied b. ~1902 — 7 household members

Surname	Black
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	Black
Age	38
Marital Status	Married
Birthplace	Tennessee
1935 Residence (City)	Indianapolis
1935 Residence (County)	Marion
Industry	0
Class of Worker	0
Highest Grade	No 4
1935 Residence	Same place
Birth State	Tennessee
Birth Country	United States
Birthplace (normalized)	tennessee

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

Spouse · 1940 · age 38 · b. ~1902 · Indiana

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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 — Marion-County, Indiana Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-01132-00216)

Line	Name	Age	Relation	Occupation	Birthplace
41	Marie Powell	15	Daughter	—	Indiana
42	Charles Powell	11	Son	—	Indiana
43	Ernest Powell	9	Son	—	Indiana
44	Bessie Powell	7	Daughter	—	Indiana
45	Here Ends Powell	None	Block 6	—	—
46	Nellie Ray	61	Head	Maid	Indiana
47	Lyman Reed	41	Son	Cement Finisher	Indiana
48	Emma Shepherd	25	Head	—	Kentucky
49	Abraham Koontz	75	Lodger	Truck Driver	Illinois
50	Ella Koontz	39	Lodger	—	Illinois
51	Rinda Maesen\|Maeson	65	Lodger	—	Kentucky
52	Ernest Taylor	27	Head	Laborer	Indiana
53	Anna M. Taylor	24	Wife	—	Indiana
54	Donald Taylor	8	Son	—	Indiana
55	Edward Taylor	5	Son	—	Indiana
56	Harold Taylor	4	Son	—	Indiana
57	Iris Taylor	3	Daughter	—	Indiana
58	Joel Taylor	0	Daughter	—	Indiana
59	Edward Yates	39	Head	Contractor	Kentucky
60	William Black	42	Head	Truck Driver	Tennessee
61	Mary Black THIS PERSON	38	Wife	—	Tennessee
62	Betty Black	12	Daughter	—	Indiana
63	Georgia Black	16	Daughter	—	Indiana
64	Frances Black	11	Daughter	—	Indiana
65	Mary Jr. Black	4	Daughter	—	Indiana
66	William Black	1	Son	—	Indiana
67	James Peeley\|Peeley	51	Head	Laborer	Alabama
68	Eura Peeley\|Peeley	52	Wife	—	Tennessee
69	William Bagsell	19	Grandson	Laborer	Tennessee
70	Eddie Parham	35	Head	Hod-Carrier	Tennessee
71	Margaret Parham	39	Wife	—	Tennessee
72	David Parham	23	Brother	Janitor	Tennessee
73	Sherdine Parham	19	Brother	Driver	Tennessee
74	Frank Fisher	32	Head	Laborer	Indiana
75	Mattie Ford	45	Aunt	Maid	Kentucky
76	Dora Taylor	22	Lodger	Laundress	Kentucky
77	William Moseley	50	Head	Houseman	Tennessee
78	Bulha Moseley	57	Wife	—	Kentucky
79	George Parrot	55	Head	Janitor	Kentucky
80	Annie Parrot	57	Wife	—	Kentucky

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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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