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Jack Brown — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Douglas-County, Illinois
Our Model Tree links this Jack Brown across the 1930 and 1940 US Censuses in Douglas-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1925), then head of a 6-person household.
Age 15
b. ~1925
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Douglas-County, Illinois |
| Surname | Brown |
| Given Name | Jack |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Bowdre Twp |
| 1935 Residence (County) | Douglas |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Bowdre Twp |
| Est. Birth Year | ~1925 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Jack | Age | Birth yr |
|---|---|---|---|---|
| Bert Brown | Head | — | 46 | ~1894 |
| Jack Brown | Son | — | 15 | ~1925 |
| Paul Brown | Son | — | 11 | ~1929 |
| Robert Brown | Son | — | 19 | ~1921 |
| Billy Brown | Son | — | 18 | ~1922 |
| Kate Brown | Spouse | — | 44 | ~1896 |
Census Appearances
1930
Douglas, Illinois
Son, age 5
Douglas, Illinois · implied b. ~1925 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brown |
| Given Name | Jack |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Douglas-County, Illinois
Son, age 15
Douglas-County, Illinois · implied b. ~1925 — 6 household members
| Surname | Brown |
| Given Name | Jack |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Bowdre Twp |
| 1935 Residence (County) | Douglas |
| Income (1939) | 0 |
| Highest Grade | Hs 1 |
| 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 Jack Brown across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Jack Brown
Son · 1940 · age 15 · b. ~1925 · Illinois
★ You are viewing this record
Sibling
Paul Brown
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Brown
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Billy Brown
Sibling · 1940 · age 18
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 — Douglas-County, Illinois
Open full size
1940 US Federal Census — Douglas-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00795-00178)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Frank B Heaton | 69 | Head | Farmer | Illinois |
| 42 | Alice Heaton | 52 | Wife | — | Illinois |
| 43 | Helen Heaton | 17 | Daughter | — | Illinois |
| 44 | Ivan B Massie | 33 | Head | Farm Hand | Illinois |
| 45 | Jane Massie | 24 | Wife | — | Illinois |
| 46 | Richard Massie | 6 | Son | — | Illinois |
| 47 | James Massie | 5 | Son | — | Illinois |
| 48 | Shirley Massie | 3 | Daughter | — | Illinois |
| 49 | Oscar D Massie | 67 | Head | Farmer | Ohio |
| 50 | Nora Massie | 57 | Wife | — | Illinois |
| 51 | Ivan Ray | 36 | Head | Laborer | Illinois |
| 52 | Flossie Ray | 32 | Wife | — | Illinois |
| 53 | Roy Ray | 14 | Son | — | Illinois |
| 54 | Betty Ray | 12 | Daughter | — | Illinois |
| 55 | Claude Ray | 11 | Son | — | Illinois |
| 56 | Floyd Ray | 8 | Son | — | Illinois |
| 57 | Charles Ray | 4 | Son | — | Illinois |
| 58 | Frank Bennett | 30 | Head | Farm Hand | Illinois |
| 59 | Essie Bennett | 27 | Wife | — | Illinois |
| 60 | Stella Bennett | 7 | Daughter | — | Illinois |
| 61 | Jimmie Bennett | 6 | Son | — | Illinois |
| 62 | Lois Bennett | 4 | Daughter | — | Illinois |
| 63 | Donald Bennett | 1 | Son | — | Illinois |
| 64 | James Williams | 27 | Head | — | Pennsylvania |
| 65 | Ruby Williams | 71 | Wife | — | Illinois |
| 66 | Ida Williams | 50 | Daughter | — | Illinois |
| 67 | Earl Williams | 43 | Son | Farmer | Illinois |
| 68 | Merle Williams | 32 | Grandson | — | Indiana |
| 69 | James Manning | 49 | Head | Farm Hand | Kentucky |
| 70 | Ida Manning | 49 | Wife | — | Indiana |
| 71 | Roy Manning | 25 | Son | — | Illinois |
| 72 | Marie Manning | 21 | Daughter | Maid | Illinois |
| 73 | Hazel Manning | 18 | Daughter | — | Illinois |
| 74 | Lily Manning | 11 | Daughter | — | Illinois |
| 75 | Bert Brown | 46 | Head | Farmer | Illinois |
| 76 | Kate Brown | 44 | Wife | — | Illinois |
| 77 | Robert Brown | 19 | Son | Farmer | Illinois |
| 78 | Billy Brown | 18 | Son | — | Illinois |
| 79 | Jack Brown THIS PERSON | 15 | Son | — | Illinois |
| 80 | Paul Brown | 11 | Son | — | Illinois |
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)