Mary Hardin — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Hamilton-County, Ohio

Our Model Tree links this Mary Hardin across the 1920, 1930 and 1940 US Censuses in Hamilton-County, Ohio (XGBoost, ~Confirmed) — first a head (b.~1883), then head of a 3-person household.

Age 57 b. ~1883 Female Head Born: Georgia Widowed

1940 Census Record Details

Census Year	1940
Location	Hamilton-County, Ohio
Surname	Hardin
Given Name	Mary
Relationship to Head	Head
Sex	F
Color / Race	Black
Age	57
Marital Status	Widowed
Birthplace	Georgia
1935 Residence (City)	Cincinnati
Additional Details
Occupation	House Cleaner
Industry	Private Homes
Class of Worker	PW
Hours Worked	20
Income (1939)	520
Highest Grade	No 4
Birth State	Georgia
Birth Country	United States
Birthplace (normalized)	georgia
Occupation	House Cleaner
Township / Ward	Cincinnati
Est. Birth Year	~1883

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.

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

Name	Relation to head	Relative to Mary	Age	Birth yr
Henry Hardin	Son	—	25	~1915
Mary Hardin	Head	—	57	~1883
Frank Hardin	Son	—	28	~1912

Census Appearances

1920

Hamilton, Ohio

Spouse, age 39

Hamilton, Ohio · implied b. ~1881 — 5 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Hardin
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	Black
Age	39
Marital Status	Married
Birthplace	Georgia
Father's Birthplace	Georgia
Mother's Birthplace	Georgia
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Birth State	Georgia
Birth Country	United States
Birthplace (normalized)	georgia

1930

Hamilton, Ohio

Spouse, age 48

Hamilton, Ohio · implied b. ~1882 — 3 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	HARDING
Given Name	MARY
Relationship to Head	Wife
Sex	F
Color / Race	Black
Age	48
Marital Status	Married
Birthplace	Georgia
Age at First Marriage	16
Father's Birthplace	Georgia
Mother's Birthplace	Georgia
Occupation	none
Can Read/Write	Yes
Birth State	Georgia
Birth Country	United States
Birthplace (normalized)	georgia

1940

Hamilton-County, Ohio

Head, age 57

Hamilton-County, Ohio · implied b. ~1883 — 3 household members

Surname	Hardin
Given Name	Mary
Relationship to Head	Head
Sex	F
Color / Race	Black
Age	57
Marital Status	Widowed
Birthplace	Georgia
1935 Residence (City)	Cincinnati
Occupation	House Cleaner
Industry	Private Homes
Class of Worker	PW
Hours Worked	20
Income (1939)	520
Highest Grade	No 4
Birth State	Georgia
Birth Country	United States
Birthplace (normalized)	georgia

Model Tree

Linked across censuses

Our Model Tree links Mary Hardin 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 Hardin

Head · 1940 · age 57 · b. ~1883 · Ohio

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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 — Hamilton-County, Ohio Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-03198-00386)

Line	Name	Age	Relation	Occupation	Birthplace
41	David R Glenn	35	Head	Truck Driver	Georgia
42	Lessie Glenn	32	Wife	Player	Georgia
43	James Glenn	14	Son	—	Cincinnati
44	David Jr Glenn	13	Son	—	Cincinnati
45	Ella Glenn	10	Daughter	—	Cincinnati
46	Emerson A Watts	37	Head	Porter	Georgia
47	Hattie Watts	29	Wife	—	Georgia
48	Emerson Jr Watts	8	Son	—	Cincinnati
49	Bettie Ann Watts	6	Daughter	—	Cincinnati
50	Mary Hardin THIS PERSON	57	Head	House Cleaner	Georgia
51	Frank Hardin	28	Son	Laborer	Georgia
52	Henry Hardin	25	Son	Plumber	Georgia
53	Earl Jackson	40	Head	Helper	Georgia
54	Bessie Jackson	42	Wife	—	Georgia
55	Columbus Jackson	19	Son	—	Georgia
56	Helen Jackson	10	Daughter	—	Cincinnati
57	William Jackson	20	Son	Air Hammer Jack	Georgia
58	Ruth Jackson	19	Daughter	—	Georgia
59	William Jr Jackson	0	Grandson	—	Cincinnati
60	James Stewart	42	Head	Laborer	Georgia
61	Hattie Stewart	30	Wife	0	Cincinnati
62	Wilhemia Stewart	10	Daughter	—	Cincinnati
63	Airfeather Stewart	9	Daughter	—	Cincinnati
64	Theresa Stewart	5	Daughter	—	Cincinnati
65	Margaret Stewart	4	Daughter	—	Cincinnati
66	Joseph Stewart	1	Son	—	Cincinnati
67	Ernest B Mcclain	26	Head	Porter	Mississippi
68	Mary Johnson	44	Mother	—	Mississippi
69	Ernest B Jr Mcclain	5	Son	—	Mississippi
70	Delores Mcclain	3	Daughter	—	Mississippi
71	Olin Godfrey	38	Head	Laborer	Georgia
72	Mattie Godfrey	42	Wife	—	Georgia
73	Monnie R Godfrey	10	Son	—	Cincinnati
74	Olin Jr Godfrey	9	Son	—	Ohio
75	Dora E Godfrey	7	Daughter	—	Ohio
76	Bobbie A Godfrey	5	Daughter	—	Ohio
77	Melvin H Godfrey	3	Son	—	Ohio
78	Ralph Godfrey	1	Son	—	Ohio
79	Eunice Body	65	Mother-in-law	—	Georgia
80	Delue Barnett	37	Head	House Cleaning	Indiana

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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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