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John Blackburn — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Cuyahoga-County, Ohio

Our Model Tree links this John Blackburn across the 1930 and 1940 US Censuses in Cuyahoga-County, Ohio (XGBoost, ~Confirmed) — first a son (b.~1927), then head of a 8-person household.

Age 13 b. ~1927 Male Son Born: Illinois Single

1940 Census Record Details

Census Year1940
LocationCuyahoga-County, Ohio
SurnameBlackburn
Given NameJohn
Relationship to HeadSon
SexM
Color / RaceWhite
Age13
Marital StatusSingle
BirthplaceIllinois
1935 Residence (City)Cleveland
1935 Residence (County)Cuyahoga
Additional Details
Highest Grade3
1935 ResidenceSame place
Birth StateIllinois
Birth CountryUnited States
Birthplace (normalized)illinois
Township / WardCleveland
Est. Birth Year~1927

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.

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

Name Relation to head Relative to John Age Birth yr
Dorothy Blackburn Spouse — 37 ~1903
Jean Blackburn Daughter — 3 ~1937
Richard Blackburn Son — 5 ~1935
John Blackburn Son — 13 ~1927
Glenn Blackburn Son — 6 ~1934
Willis Blackburn Head — 40 ~1900
Loam Blackburn Daughter — 15 ~1925
Robert Blackburn Son — 10 ~1930

Census Appearances

1930
Cuyahoga, Ohio
Son, age 2
Cuyahoga, Ohio · implied b. ~1928 — 4 household members
●  Primary link · ~Confirmed · 2 sources
XGBoost Household
Surname Blackburn
Given Name John W
Relationship to Head Son
Sex M
Color / Race White
Age 2
Marital Status Single
Birthplace Illinois
Father's Birthplace Illinois
Mother's Birthplace Illinois
Birth State Illinois
Birth Country United States
Birthplace (normalized) illinois
1940
Cuyahoga-County, Ohio
Son, age 13
Cuyahoga-County, Ohio · implied b. ~1927 — 8 household members
Surname Blackburn
Given Name John
Relationship to Head Son
Sex M
Color / Race White
Age 13
Marital Status Single
Birthplace Illinois
1935 Residence (City) Cleveland
1935 Residence (County) Cuyahoga
Highest Grade 3
1935 Residence Same place
Birth State Illinois
Birth Country United States
Birthplace (normalized) illinois

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 John Blackburn across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Blackburn
Son · 1940 · age 13 · b. ~1927 · Ohio
★ You are viewing this record
Sibling
Loam Blackburn
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jean Blackburn
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Blackburn
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Blackburn
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Glenn Blackburn
Sibling · 1940 · age 6
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 — Cuyahoga-County, Ohio Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-03228-00664)

Line Name Age Relation Occupation Birthplace
1 Edward Cutter 24 Head Mechanic Ohio
2 Virginia Cutter 21 Wife Cosmetologist Ohio
3 Sena Ketchum 41 Head Senior Clerk Kentucky
4 Ben E. Ketchum 21 Son — Ohio
5 Eunice Ketchum 19 Daughter New Worker Ohio
6 Woodrow Ketchum 16 Son — Ohio
7 Paul Ketchum 13 Son — Ohio
8 Mabel Mcgregor 39 Head Teacher Ohio
9 Emmanuel Mcgregor 20 Son — Ohio
10 William Mcgregor 16 Son — Ohio
11 Dan Fradra 29 Head Bookkeeper Pennsylvania
12 Gladys Fradra 29 Wife Presser Pennsylvania
13 Bettie Davidson 55 Mother-in-law Operator New Jersey
14 Maynarde Grubbs 51 Head Painter Ohio
15 Lila Grubbs 48 Wife — Ohio
16 Phyllis Grubbs 16 Daughter — Ohio
17 Willis Blackburn 40 Head Carpenter Illinois
18 Dorothy Blackburn 37 Wife — Indiana
19 Loam Blackburn 15 Daughter — Illinois
20 John Blackburn THIS PERSON 13 Son — Illinois
21 Robert Blackburn 10 Son — Ohio
22 Glenn Blackburn 6 Son — Ohio
23 Richard Blackburn 5 Son — Ohio
24 Jean Blackburn 3 Daughter — Ohio
25 Wilford Foster 51 Head Conductor Pennsylvania
26 Ada Foster 62 Wife — New York
27 David Davidson 54 Head Machinist Russia South
28 Mary Davidson 53 Wife — Roumania
29 Rudolf Davidson 28 Son Machinist Ohio
30 Adele Davidson 17 Daughter New Worker Ohio
31 Jeanette Davidson 13 Daughter — Ohio
32 Hugo Oliver 60 Head Salesman Sweden
33 Helen Oliver 53 Wife Saleslady Ohio
34 Shing Kee 64 Head Washer China
35 William Copeland 30 Lodger Barber Ohio
36 Domenic L. Demortus 49 Head Deputy State Auditor Ohio
37 Naomie D. Demortus 45 Wife Teacher Ohio
38 G. E. Thwing 51 Head Proprietor Kansas
39 Marrel Thwing 45 Wife — Ohio
40 Marie Thwing 17 Daughter — Ohio

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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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