Mary Clark — 1940 US Census Record

Model Tree available

1940 United States Federal Census · Vigo-County, Indiana

Our Model Tree links this Mary Clark across the 1920, 1930 and 1940 US Censuses in Vigo-County, Indiana (XGBoost, ~Confirmed), with identified parents Percy & Rose — first a spouse (b.~1915), then head of a 5-person household.

Age 25 b. ~1915 Female Spouse Born: Indiana Married

1940 Census Record Details

Census Year	1940
Location	Vigo-County, Indiana
Surname	Clark
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	25
Marital Status	Married
Birthplace	Indiana
1935 Residence (City)	Universal
1935 Residence (County)	Vermillion
Additional Details
Hours Worked	0
Income (1939)	0
Highest Grade	No 7
1935 Residence	Indiana
Birth State	Indiana
Birth Country	United States
Birthplace (normalized)	indiana
Township / Ward	Fayette Township
Est. Birth Year	~1915

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
Wilda Clark	Daughter	—	6	~1934
Walter Clark	Head	—	30	~1910
Phillip Clark	Son	—	3	~1937
Lawrence Clark	Son	—	4	~1936
Mary Clark	Spouse	—	25	~1915

Census Appearances

1920

Vigo, Indiana

Daughter, age 4

Vigo, Indiana · implied b. ~1916 — 9 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Clark
Given Name	Mary
Relationship to Head	daughter
Sex	F
Color / Race	White
Age	4
Marital Status	Single
Birthplace	Indiana
Father's Birthplace	Indiana
Mother's Birthplace	Indiana
Occupation	none
Can Read	No
Can Write	No
Speaks English	Yes
Birth State	Indiana
Birth Country	United States
Birthplace (normalized)	indiana

1930

Vigo, Indiana

Daughter, age 14

Vigo, Indiana · implied b. ~1916 — 48 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Clark
Given Name	Mary A.
Relationship to Head	Daughter
Sex	F
Color / Race	White
Age	14
Marital Status	Single
Birthplace	Indiana
Father's Birthplace	Indiana
Mother's Birthplace	Indiana
Can Read/Write	Yes
Birth State	Indiana
Birth Country	United States
Birthplace (normalized)	indiana

1940

Vigo-County, Indiana

Spouse, age 25

Vigo-County, Indiana · implied b. ~1915 — 5 household members

Surname	Clark
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	25
Marital Status	Married
Birthplace	Indiana
1935 Residence (City)	Universal
1935 Residence (County)	Vermillion
Hours Worked	0
Income (1939)	0
Highest Grade	No 7
1935 Residence	Indiana
Birth State	Indiana
Birth Country	United States
Birthplace (normalized)	indiana

Model Tree

Model Tree available

Our Model Tree links Mary Clark across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Percy Clark (~0.92 confidence) and mother Rose Clark (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.

Show:

Gen 1 Parents confidence ≈ 0.92

Father

Percy Clark

b. ~1875

Source father

● Household · direct · ~0.92

Mother

Rose Clark

b. ~1881

Source mother

● Household · direct · ~0.92

This person

Anchor record

Mary Clark

Spouse · 1940 · age 25 · b. ~1915 · 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 — Vigo-County, Indiana Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-01103-00046)

Line	Name	Age	Relation	Occupation	Birthplace
41	Mary Leprodi	54	Head	—	Hungary
42	Katherine Leprodi	24	Daughter	Seamstress	Indiana
43	Frank Jr. Leprodi	21	Son	Laborer	Indiana
44	Louis Jr. Leprodi	20	Son	Watchman	Indiana
45	Paul Leprodi	17	Son	New Worker	Indiana
46	Richard Tagg	29	Head	Miner	Indiana
47	Marie Tagg	22	Wife	—	Indiana
48	Welford Tagg	3	Son	—	Indiana
49	Almary Tagg	1	Daughter	—	Indiana
50	Walter S. Clark	30	Head	Laborer	Illinois
51	Mary Clark THIS PERSON	25	Wife	—	Indiana
52	Wilda J. Clark	6	Daughter	—	Indiana
53	Lawrence A. Clark	4	Son	—	Indiana
54	Phillip R. Clark	3	Son	—	Indiana
55	Thomas Roberts	59	Head	Laborer	Indiana
56	Frank J. Nelson	63	Head	Carpenter	Indiana
57	Battista Borea	59	Head	Miner	Italy
58	Madalena Ron	76	Head	—	Spain
59	John Francone	60	Head	Miner	Italy
60	Maria Mosela	70	Head	—	Italy
61	Arthur Mosela	29	Son	Teacher	Indiana
62	Enea Beltrame	33	Head	—	Italy
63	Felix Beltrame	11	Son	—	Indiana
64	Pete Cipoticamin	53	Head	—	Yugoslavia
65	Emma Cipoticamin	45	Wife	—	Austria
66	Alex Bianchini	57	Head	Proprietor	Italy
67	Josephine Bianchini	52	Wife	Waitress	Italy
68	Duilio Vistarelli	42	Head	Proprietor	Italy
69	Lena Costa	26	Daughter	—	Indiana
70	Ferdinand Bernardi	58	Lodger	—	Italy
71	Liza J. Whitford	86	Head	—	Indiana
72	Ida J. Whitford	63	Daughter	—	Indiana
73	Arthur Whitford	58	Son	Laborer	Indiana
74	John Baratto	51	Head	Miner	Italy
75	Antonia Baratto	49	Wife	—	Italy
76	Amelia Baratto	16	Daughter	—	Indiana
77	Angelo Rizzolo	44	Head	Miner	Italy
78	Alice Rizzolo	55	Wife	—	Indiana
79	Primo Rizzolo	17	Son	New Worker	Indiana
80	Thomas Mckinney	31	Head	Miner	Indiana

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Pedigree Summary

Mary

Gen 1 · 2 parents ~0.92

Max depth 4 (1900–1950 window)

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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