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David Cook — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Lorain-County, Ohio

Our Model Tree links this David Cook across the 1930 and 1940 US Censuses in Lorain-County, Ohio (XGBoost, ~Confirmed) — first a son (b.~1921), then head of a 9-person household.

Age 19 b. ~1921 Male Son Born: Ohio Single

1940 Census Record Details

Census Year1940
LocationLorain-County, Ohio
SurnameCook
Given NameDavid S.
Relationship to HeadSon
SexM
Color / RaceWhite
Age19
Marital StatusSingle
BirthplaceOhio
1935 Residence (City)Eaton Township
1935 Residence (County)Lorain
Additional Details
OccupationAssembler
IndustryBicycle Mfg.
Class of WorkerPW
Hours Worked15
Income (1939)170
Highest GradeHs 4
1935 ResidenceSame House
Birth StateOhio
Birth CountryUnited States
Birthplace (normalized)ohio
OccupationAssembler
Township / WardEaton Township
Est. Birth Year~1921

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.

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

Name Relation to head Relative to David Age Birth yr
Donald Cook Head — 52 ~1888
John Supernot Other — 38 ~1902
David Cook Son — 19 ~1921
Carol Cook Daughter — 20 ~1920
Walter Cook Son — 12 ~1928
Frieda Cook Spouse — 51 ~1889
Jean Cook Daughter — 26 ~1914
Lawrence Cook Son — 10 ~1930
Mary Cook Daughter — 16 ~1924

Census Appearances

1930
Lorain, Ohio
Son, age 10
Lorain, Ohio · implied b. ~1920 — 12 household members
●  Primary link · ~Confirmed · 2 sources
XGBoost Household
Surname Cook
Given Name David S.
Relationship to Head Son
Sex M
Color / Race White
Age 10
Marital Status Single
Birthplace Ohio
Father's Birthplace Ohio
Mother's Birthplace Missouri
Can Read/Write Yes
Birth State Ohio
Birth Country United States
Birthplace (normalized) ohio
1940
Lorain-County, Ohio
Son, age 19
Lorain-County, Ohio · implied b. ~1921 — 9 household members
Surname Cook
Given Name David S.
Relationship to Head Son
Sex M
Color / Race White
Age 19
Marital Status Single
Birthplace Ohio
1935 Residence (City) Eaton Township
1935 Residence (County) Lorain
Occupation Assembler
Industry Bicycle Mfg.
Class of Worker PW
Hours Worked 15
Income (1939) 170
Highest Grade Hs 4
1935 Residence Same House
Birth State Ohio
Birth Country United States
Birthplace (normalized) ohio

Model Tree

An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Linked across censuses
Our Model Tree links David Cook across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
David Cook
Son · 1940 · age 19 · b. ~1921 · Ohio
★ You are viewing this record
Sibling
Mary Cook
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Carol Cook
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Walter Cook
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lawrence Cook
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jean Cook
Sibling · 1940 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+) Probable / derived (~0.65–0.89) Candidate (<0.65, unverified)

Original Census Page

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

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-03104-00088)

Line Name Age Relation Occupation Birthplace
41 Jessie L. Jamieson 38 Wife — Scotland
42 Robert H. Jamieson 16 Son — Ohio
43 Cleon K. Crowell 33 Head Janitor Ohio
44 Edna M. Crowell 27 Wife — Ohio
45 Lois A. Crowell 1 Daughter — Ohio
46 Blanche C. Tite 52 Head — Ohio
47 Sterling H. Tite 16 Son — Ohio
48 Fred V. Phelps 59 Head Shipping Clerk Ohio
49 Pearl E. Phelps 47 Wife — Pennsylvania
50 Donald W. Phelps 20 Son — Ohio
51 Robert D. Hoskins 24 Head Clerk Ohio
52 Belva M. Hoskins 24 Wife — Ohio
53 Carl E. Ziehm 39 Head Mgr. Ohio
54 Ruth A. Ziehm 37 Wife — Ohio
55 Betty J. Ziehm 18 Daughter — Ohio
56 Carl Jr. Ziehm 16 Son — Ohio
57 Glenn S. Carpenter 33 Head Vocational Agr. Teacher Ohio
58 Eleanor M. Carpenter 38 Wife — Ohio
59 William S. Carpenter 4 Son — Ohio
60 James T. Carpenter 2 Son — Ohio
61 Dwight L. Smith 36 Head Watchman Ohio
62 Virginia M. Smith 22 Wife — Ohio
63 Marilyn J. Smith 2 Daughter — Ohio
64 Kenneth L. Smith 0 Son — Ohio
65 Sam S. Garrison 53 Head Paint Sprayer Ohio
66 Grace A. Garrison 51 Wife — Ohio
67 Betty M. Garrison 18 Daughter — Ohio
68 Donald S. Cook 52 Head Farmer Ohio
69 Frieda Cook 51 Wife — Missouri
70 Jean C. Cook 26 Daughter Com. Teacher Ohio
71 Carol M. Cook 20 Daughter — Ohio
72 David S. Cook THIS PERSON 19 Son Assembler Ohio
73 Mary C. Cook 16 Daughter — Ohio
74 Walter S. Cook 12 Son — Ohio
75 Lawrence S. Cook 10 Son — Ohio
76 John Supernot 38 Lodger Farm Hand Hungary
77 Elson C. Munn 51 Head Farmer Ohio
78 Elsie A. Munn 45 Wife — Ohio
79 Eleanor C. Munn 21 Daughter — Ohio
80 Joseph Eith 43 Head Iron-Worker Hungary

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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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