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Leo Brown — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Macon-County, Illinois
Our Model Tree links this Leo Brown across the 1930 and 1940 US Censuses in Macon-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1904), then head of a 7-person household.
Age 36
b. ~1904
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Macon-County, Illinois |
| Surname | Brown |
| Given Name | Leo |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Decatur City |
| 1935 Residence (County) | Macon |
| Additional Details | |
| Occupation | Machinist Helper |
| Industry | I.C. Railroad |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 496 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same Place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Machinist Helper |
| Township / Ward | Decatur City |
| Est. Birth Year | ~1904 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Leo | Age | Birth yr |
|---|---|---|---|---|
| Maurice Brown | Son | — | 9 | ~1931 |
| Dorothy Brown | Daughter | — | 11 | ~1929 |
| Marilyn Brown | Daughter | — | 6 | ~1934 |
| Ralph Brown | Son | — | 12 | ~1928 |
| Nellie Brown | Spouse | — | 31 | ~1909 |
| Robert Brown | Son | — | 14 | ~1926 |
| Leo Brown | Head | — | 36 | ~1904 |
Census Appearances
1930
Macon, Illinois
Head, age 26
Macon, Illinois · implied b. ~1904 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brown |
| Given Name | Leo |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 21 |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Machinist |
| Industry | Railway Shop |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 17 |
| Veteran | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Macon-County, Illinois
Head, age 36
Macon-County, Illinois · implied b. ~1904 — 7 household members
| Surname | Brown |
| Given Name | Leo |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Decatur City |
| 1935 Residence (County) | Macon |
| Occupation | Machinist Helper |
| Industry | I.C. Railroad |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 496 |
| Highest Grade | Hs 4 |
| 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 Leo Brown across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Leo Brown
Head · 1940 · age 36 · b. ~1904 · Illinois
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Macon-County, Illinois
Open full size
1940 US Federal Census — Macon-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00843-00676)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Etha Barker | 62 | Housekeeper | Housekeeper | Indiana |
| 2 | Harry Barker | 38 | Son | Chauffeur | Missouri |
| 3 | Frank Cox | 35 | Nephew | Laborer | Illinois |
| 4 | Harley Cox | 23 | Nephew | Landscaper | Illinois |
| 5 | Fred Farley | 59 | Head | — | Pennsylvania |
| 6 | Frederick Farley | 7 | Adopted Son | — | Illinois |
| 7 | George Blauth | 27 | Head | Dealer | Illinois |
| 8 | Alma Blauth | 22 | Wife | — | Illinois |
| 9 | Retha Blauth | 3 | Daughter | — | Illinois |
| 10 | George Dale Blauth | 1 | Son | — | Illinois |
| 11 | Roseland Blauth | 0 | Daughter | — | Illinois |
| 12 | Leo Brown THIS PERSON | 36 | Head | Machinist Helper | Illinois |
| 13 | Nellie Brown | 31 | Wife | — | Illinois |
| 14 | Robert Brown | 14 | Son | — | Illinois |
| 15 | Ralph Brown | 12 | Son | — | Illinois |
| 16 | Dorothy Brown | 11 | Daughter | — | Illinois |
| 17 | Maurice Brown | 9 | Son | — | Illinois |
| 18 | Marilyn Brown | 6 | Daughter | — | Illinois |
| 19 | Oscar Jenkins | 46 | Head | Boilermaker | Illinois |
| 20 | Dora Jenkins | 54 | Wife | — | Illinois |
| 21 | Betty Bernice Cox | 14 | Granddaughter | — | Illinois |
| 22 | Harold K. Harvey | 44 | Head | Billing Dept | Illinois |
| 23 | Charlotte Harvey | 42 | Wife | — | Illinois |
| 24 | Betty Jane Harvey | 16 | Daughter | — | Illinois |
| 25 | Mary Jean Harvey | 16 | Daughter | — | Illinois |
| 26 | Harold Jr. Harvey | 21 | Son | Meter Tester | Illinois |
| 27 | Bobbie D. Harvey | 12 | Son | — | Illinois |
| 28 | Jack Harvey | 6 | Son | — | Illinois |
| 29 | Jerry Harvey | 6 | Son | — | Illinois |
| 30 | Annabell Graham | 19 | Servant | Servant | Illinois |
| 31 | Charles E. Stark | 48 | Head | — | Illinois |
| 32 | Grace Stark | 49 | Wife | — | Kansas |
| 33 | Harvey Stark | 17 | Son | — | Illinois |
| 34 | Irene Mary Stark | 13 | Daughter | — | Illinois |
| 35 | Howard Mclemore | 59 | Head | Laborer | Indiana |
| 36 | Nora Mclemore | 56 | Wife | — | Indiana |
| 37 | Cora L. Burke | 64 | Head | — | Indiana |
| 38 | Mary Harpstrite | 42 | Head | — | Illinois |
| 39 | William Harpstrite | 15 | Son | — | Illinois |
| 40 | Daniel Briley | 72 | Father | — | Ireland |
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)