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John Blackburn — 1940 US Census Record
Model Tree available1940 United States Federal Census · Lee-County, Illinois
Our Model Tree links this John Blackburn across the 1910, 1920, 1930 and 1940 US Censuses in Lee-County, Illinois (XGBoost, ~Confirmed), with identified parents Thomas & Thomas — first a head (b.~1908), then head of a 3-person household.
Age 32
b. ~1908
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Lee-County, Illinois |
| Surname | Blackburn |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Dixon City |
| 1935 Residence (County) | Lee |
| Additional Details | |
| Occupation | Drum Winder |
| Industry | Wire Mill |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1560 |
| Highest Grade | 7 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Drum Winder |
| Township / Ward | Dixon City |
| Est. Birth Year | ~1908 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Fannie Blackburn | Spouse | — | 30 | ~1910 |
| John Blackburn | Head | — | 32 | ~1908 |
| Ethel Blackburn | Daughter | — | 7 | ~1933 |
Census Appearances
1910
Lee, Illinois
Son, age 2
Lee, Illinois · implied b. ~1908 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Blackburn |
| Given Name | John |
| 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 |
1920
Lee, Illinois
Son, age 12
Lee, Illinois · implied b. ~1908 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Blackburn |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Lee, Illinois
Son, age 22
Lee, Illinois · implied b. ~1908 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Blackburn |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 20 |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Grinder |
| Industry | Wire Screen Factory |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Lee-County, Illinois
Head, age 32
Lee-County, Illinois · implied b. ~1908 — 3 household members
| Surname | Blackburn |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Dixon City |
| 1935 Residence (County) | Lee |
| Occupation | Drum Winder |
| Industry | Wire Mill |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1560 |
| Highest Grade | 7 |
| 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.
Our Model Tree links John Blackburn across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Thomas Blackburn (~0.92 confidence) and father Thomas Blackburn (~0.92 confidence) and mother Cora Blackburn (~0.92 confidence) and mother Edna Blackburn (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Thomas Blackburn
b. ~1874
Source father
● Household
· direct · ~0.92
Father
Thomas Blackburn
b. ~1873
Source father
● Household
· direct · ~0.92
Mother
Cora Blackburn
b. ~1877
Source mother
● Household
· direct · ~0.92
Mother
Edna Blackburn
b. ~1878
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Blackburn
Head · 1940 · age 32 · b. ~1908 · Illinois
★ 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 — Lee-County, Illinois
Open full size
1940 US Federal Census — Lee-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00836-00366)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Irven Campbell | 39 | Head | Millwright | Kansas |
| 2 | Ruth Campbell | 34 | Wife | — | Illinois |
| 3 | Betty June Campbell | 14 | Daughter | — | Illinois |
| 4 | Irven Jr. Campbell | 13 | Son | — | Illinois |
| 5 | Virginia Mae Campbell | 11 | Daughter | — | Illinois |
| 6 | Robert J. Campbell | 7 | Son | — | Illinois |
| 7 | Harold Willis | 33 | Head | Weaving Dept | Illinois |
| 8 | Cecelia Willis | 30 | Wife | Bobbin Winder | Illinois |
| 9 | Francis Burns | 67 | Head | — | Illinois |
| 10 | Margaret Burns | 64 | Wife | — | Illinois |
| 11 | Carl Kellen | 35 | Head | Mechanic | Illinois |
| 12 | Marguerite Kellen | 34 | Wife | Treeing | Illinois |
| 13 | Cecil D. Kellen | 14 | Son | — | Illinois |
| 14 | E. A. Johnston | 32 | Head | Foreman | Washington |
| 15 | Ruby Johnston | 29 | Wife | — | Illinois |
| 16 | Patricia Johnston | 7 | Daughter | — | Illinois |
| 17 | Richard Johnston | 6 | Son | — | Minnesota |
| 18 | Gerald Johnston | 4 | Son | — | Illinois |
| 19 | La Vern Emmert | 24 | Head | Time Keeper | Illinois |
| 20 | Marie Emmert | 24 | Wife | — | Illinois |
| 21 | Shirley Emmert | 8 | Daughter | — | Illinois |
| 22 | Rita Emmert | 0 | Daughter | — | Illinois |
| 23 | Kent Mcgonitle | 6 | Son | — | Illinois |
| 24 | Frank Wadzinski | 51 | Head | Night Watchman | New York |
| 25 | Mary Wadzinski | 56 | Wife | — | Illinois |
| 26 | Frank Jr. Wadzinski | 19 | Son | Labor | Illinois |
| 27 | Walter Klein | 41 | Head | Mechanic | Illinois |
| 28 | Helen Klein | 42 | Wife | — | Illinois |
| 29 | Seacil Sitter | 40 | Head | Mechanic | Illinois |
| 30 | Flossie Sitter | 39 | Wife | Attendant | Illinois |
| 31 | Leon Sitter | 17 | Son | Clerk | Illinois |
| 32 | Raymond Wright | 40 | Head | Sales Man | Illinois |
| 33 | Faye Wright | 37 | Wife | Lunch Room | Illinois |
| 34 | R. Elmer Wright | 16 | Son | — | Illinois |
| 35 | Helen Wright | 14 | Daughter | — | Illinois |
| 36 | Bert Britt | 54 | Head | Decorating | Illinois |
| 37 | Ethel Britt | 44 | Wife | — | Illinois |
| 38 | John Blackburn THIS PERSON | 32 | Head | Drum Winder | Illinois |
| 39 | Fannie Blackburn | 30 | Wife | Bobbin Winder | Mississippi |
| 40 | Ethel M. Blackburn | 7 | Daughter | — | Illinois |
Pedigree Summary
John
Gen 1 · 4 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)