Dorothy Clark — 1940 US Census Record

Model Tree available

1940 United States Federal Census · Washington-County, Ohio

Our Model Tree links this Dorothy Clark across the 1920, 1930 and 1940 US Censuses in Washington-County, Ohio (XGBoost, ~Confirmed), with identified parents Theodore & Hazel — first a daughter (b.~1918), then head of a 4-person household.

Age 22 b. ~1918 Female Daughter Born: Ohio Single

1940 Census Record Details

Census Year	1940
Location	Washington-County, Ohio
Surname	Clark
Given Name	Dorothy
Relationship to Head	Daughter
Sex	F
Color / Race	White
Age	22
Marital Status	Single
Birthplace	Ohio
1935 Residence (City)	Marietta City
1935 Residence (County)	Washington
Additional Details
Occupation	teacher
Industry	public school
Class of Worker	GW
Hours Worked	39
Income (1939)	349
Highest Grade	C 2
1935 Residence	Same place
Birth State	Ohio
Birth Country	United States
Birthplace (normalized)	ohio
Occupation	Teacher
Township / Ward	Marietta City
Est. Birth Year	~1918

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.

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

Name	Relation to head	Relative to Dorothy	Age	Birth yr
Dorothy Clark	Daughter	—	22	~1918
Theodore Mulfrech	Head	—	35	~1905
George Decker	Other	—	76	~1864
Hazel Mulfrech	Spouse	—	18	~1922

Census Appearances

1920

Washington, Ohio

Other, age 3

Washington, Ohio · implied b. ~1917 — 8 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Clark
Given Name	Dorothy J.
Relationship to Head	Granddaughter
Sex	F
Color / Race	White
Age	3
Marital Status	Single
Birthplace	Ohio
Father's Birthplace	Ohio
Mother's Birthplace	Ohio
Birth State	Ohio
Birth Country	United States
Birthplace (normalized)	ohio

1930

Washington, Ohio

Other, age 13

Washington, Ohio · implied b. ~1917 — 7 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Clark
Given Name	Dorothy J.
Relationship to Head	Granddaughter
Sex	F
Color / Race	White
Age	13
Marital Status	Single
Birthplace	Ohio
Father's Birthplace	Ohio
Mother's Birthplace	Ohio
Can Read/Write	Yes
Birth State	Ohio
Birth Country	United States
Birthplace (normalized)	ohio

1940

Washington-County, Ohio

Daughter, age 22

Washington-County, Ohio · implied b. ~1918 — 4 household members

Surname	Clark
Given Name	Dorothy
Relationship to Head	Daughter
Sex	F
Color / Race	White
Age	22
Marital Status	Single
Birthplace	Ohio
1935 Residence (City)	Marietta City
1935 Residence (County)	Washington
Occupation	teacher
Industry	public school
Class of Worker	GW
Hours Worked	39
Income (1939)	349
Highest Grade	C 2
1935 Residence	Same place
Birth State	Ohio
Birth Country	United States
Birthplace (normalized)	ohio

Model Tree

Model Tree available

Our Model Tree links Dorothy Clark across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Theodore Mulfrech (~0.92 confidence) and mother Hazel Mulfrech (~0.50 confidence). The pedigree spans 1 generation with 2 identified ancestors.

Show:

Gen 1 Parents confidence ≈ 0.71

Father

Theodore Mulfrech

b. ~1905

Source father

● Household · direct · ~0.92

Mother

Hazel Mulfrech

b. ~1922

Source mother

● Household · direct · ~0.5

This person

Anchor record

Dorothy Clark

Daughter · 1940 · age 22 · b. ~1918 · 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 — Washington-County, Ohio Open full size

Page Contents

26 people indexed on this census page (nara:1940:m-t0627-03166-00028)

Line	Name	Age	Relation	Occupation	Birthplace
1	Amelia Munger	58	Lodger	Practical Nurse	West Virginia
2	Aubra Huff	25	Lodger	Waitress	West Virginia
3	Florence Moses	53	Head	Cook	Ohio
4	Glen Moses	31	Son	—	Ohio
5	Clarence Cargill	57	Head	Receiving Clerk	Ohio
6	Charles Clark	25	Head	Electrician	Ohio
7	Florence Clark	23	Wife	—	Ohio
8	M. Ta Mary Clark	2	Daughter	—	Ohio
9	Henry Benson	26	Head	Salesman	West Virginia
10	Dorothy Benson	23	Wife	—	Ohio
11	Jerry Benson	3	Son	—	Ohio
12	Jane Benson	2	Daughter	—	Ohio
13	Theodore Mulfrech	35	Head	Painter	Ohio
14	Hazel Mulfrech	18	Wife	—	Ohio
15	Dorothy Clark THIS PERSON	22	Daughter	Teacher	Ohio
16	George M Decker	76	Father	—	Ohio
17	Bert Tumblin	64	Head	—	Ohio
18	Nellie Tumblin	15	Daughter	—	Ohio
19	Ralph Tumblin	11	Son	—	Ohio
20	Carl Beck	25	Head	Laborer	Ohio
21	Gertrude Beck	25	Wife	—	Ohio
22	Norman Dawson	19	Lodger	Laborer	Ohio
23	Carl Congleton	37	Head	Foreman	Ohio
24	Cordelia Congleton	33	Wife	—	Ohio
25	Leona Congleton	14	Daughter	—	Ohio
26	Ruby Congleton	12	Daughter	—	Ohio

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Pedigree Summary

Dorothy

Gen 1 · 2 parents ~0.71

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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