Harry Clark — 1940 US Census Record

Model Tree available

1940 United States Federal Census · Cuyahoga-County, Ohio

Our Model Tree links this Harry Clark across the 1920, 1930 and 1940 US Censuses in Cuyahoga-County, Ohio (XGBoost, ~Confirmed), with identified parents Harry & Elizabeth — first a head (b.~1910), then head of a 3-person household.

Age 30 b. ~1910 Male Head Born: Pennsylvania Married

1940 Census Record Details

Census Year	1940
Location	Cuyahoga-County, Ohio
Surname	Clark
Given Name	Harry
Relationship to Head	Head
Sex	M
Color / Race	White
Age	30
Marital Status	Married
Birthplace	Pennsylvania
1935 Residence (City)	Cleveland
1935 Residence (County)	Cuyahoga
Additional Details
Occupation	Optician
Industry	Optical office
Class of Worker	PW
Hours Worked	40
Income (1939)	1560
Highest Grade	H-4
1935 Residence	Same Place
Birth State	Pennsylvania
Birth Country	United States
Birthplace (normalized)	pennsylvania
Occupation	Optician
Township / Ward	Cleveland
Est. Birth Year	~1910

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 Harry	Age	Birth yr
Judith Clark	Daughter	—	1	~1939
Harry Clark	Head	—	30	~1910
Lenore Clark	Spouse	—	29	~1911

Census Appearances

1920

Cuyahoga, Ohio

Son, age 10

Cuyahoga, Ohio · implied b. ~1910 — 5 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Clark
Given Name	Harry
Relationship to Head	Son
Sex	M
Color / Race	White
Age	10
Marital Status	Single
Birthplace	Pennsylvania
Father's Birthplace	West Virginia
Mother's Birthplace	Ohio
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Birth State	Pennsylvania
Birth Country	United States
Birthplace (normalized)	pennsylvania

1930

Cuyahoga, Ohio

Son, age 20

Cuyahoga, Ohio · implied b. ~1910 — 5 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Clark
Given Name	Harry H
Relationship to Head	Son
Sex	M
Color / Race	White
Age	20
Marital Status	Single
Birthplace	Pennsylvania
Father's Birthplace	West Virginia
Mother's Birthplace	Ohio
Can Read/Write	Yes
Birth State	Pennsylvania
Birth Country	United States
Birthplace (normalized)	pennsylvania

1940

Cuyahoga-County, Ohio

Head, age 30

Cuyahoga-County, Ohio · implied b. ~1910 — 3 household members

Surname	Clark
Given Name	Harry
Relationship to Head	Head
Sex	M
Color / Race	White
Age	30
Marital Status	Married
Birthplace	Pennsylvania
1935 Residence (City)	Cleveland
1935 Residence (County)	Cuyahoga
Occupation	Optician
Industry	Optical office
Class of Worker	PW
Hours Worked	40
Income (1939)	1560
Highest Grade	H-4
1935 Residence	Same Place
Birth State	Pennsylvania
Birth Country	United States
Birthplace (normalized)	pennsylvania

Model Tree

Model Tree available

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

Show:

Gen 1 Parents confidence ≈ 0.92

Father

Harry Clark

b. ~1879

Source father

● Household · direct · ~0.92

Mother

Elizabeth Clark

b. ~1880

Source mother

● Household · direct · ~0.92

This person

Anchor record

Harry Clark

Head · 1940 · age 30 · b. ~1910 · Ohio

★ You are viewing this record

Confirmed / household (~0.90+) Probable / derived (~0.65–0.89) Candidate (<0.65, unverified)

Original Census Page

1940 US Federal Census — Cuyahoga-County, Ohio Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-03228-00535)

Line	Name	Age	Relation	Occupation	Birthplace
41	Harry Clark THIS PERSON	30	Head	Optician	Pennsylvania
42	Lenore Clark	29	Wife	—	Ohio
43	Judith Clark	1	Daughter	—	Ohio
44	Clara Kreinberg	55	Head	—	Russia
45	Herman Kreinberg	36	Stepson	Attorney	Russia
46	Mildred Mortlock	23	Daughter	Social Worker	New Jersey
47	John J. Dengeler	63	Head	Laborer	England
48	Mary A. Dengeler	58	Wife	—	England
49	Ben Neides	56	Head	Salesman	W. Virginia
50	Lillian Neides	54	Wife	—	New York
51	Gertrude Neides	26	Daughter	Saleslady	Ohio
52	Alfred Neides	21	Son	Sales Mgr.	Ohio
53	Jerome Neides	17	Son	Salesman	Ohio
54	Grace Speddy	65	Head	—	Ohio
55	Samuel Toffler	80	Head	—	Hungary
56	Nettie Toffler	74	Wife	—	Hungary
57	Sylvia Toffler	45	Daughter	School Teacher	Ohio
58	Edward F. Cushing	62	Head	Foreman	Ohio
59	Margaret Cushing	58	Wife	—	Ohio
60	Bernard Cox	22	Lodger	Salesman	Ohio
61	Samuel Altman	53	Head	Salesman	Ohio
62	Estella Altman	52	Wife	—	Ohio
63	Herbert M. Altman	24	Son	Owner	Ohio
64	Mildred R. Altman	23	Daughter	Secretary	Ohio
65	Lena Labovitch	76	Mother	—	Hungary
66	Dan Ressler	28	Head	Chiropodist	Eng. Canada
67	Louise Ressler	28	Wife	—	Virginia
68	Diane Ressler	6	Daughter	—	Ohio
69	Millicent Ressler	5	Daughter	—	Ohio
70	Bella Edelman	53	Mother	—	Virginia
71	Milton Gordon	35	Head	Shoe Salesman	Missouri
72	Tillie Gordon	31	Wife	—	Pennsylvania
73	Joanne Gordon	5	Daughter	—	Ohio
74	Maynie Bartel	16	Servant	Servant	Ohio
75	Harry Smit	63	Head	Machinist	Russia
76	Frieda Smit	60	Wife	—	Ohio
77	Nellie Schmada	48	Head	Proofreader	Ohio
78	Edmond Schmada	25	Son	Relief Inspector	Ohio
79	Louis A. Plietz	58	Head	Special Agent	Ohio
80	Edward C. Plietz	55	Brother	Public Accountant	Ohio

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Pedigree Summary

Harry

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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