AB
Alexander Brown — 1940 US Census Record
Model Tree available1940 United States Federal Census · Sangamon-County, Illinois
Our Model Tree links this Alexander Brown across the 1920, 1930 and 1940 US Censuses in Sangamon-County, Illinois (XGBoost, ~Confirmed), with identified parents Alexander & Isabelle — first a head (b.~1900), then head of a 3-person household.
Age 40
b. ~1900
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Sangamon-County, Illinois |
| Surname | Brown |
| Given Name | Alexander |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Thayer village |
| 1935 Residence (County) | Sangamon |
| Additional Details | |
| Occupation | Labor |
| Industry | W.P.A. Project |
| Class of Worker | GW |
| Hours Worked | 24 |
| Income (1939) | 480 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Labor |
| Township / Ward | Thayer Village |
| Est. Birth Year | ~1900 |
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 Alexander | Age | Birth yr |
|---|---|---|---|---|
| Alex Brown | Son | — | 10 | ~1930 |
| Alexander Brown | Head | — | 40 | ~1900 |
| Carrie Brown | Spouse | — | 26 | ~1914 |
Census Appearances
1920
Sangamon, Illinois
Son, age 17
Sangamon, Illinois · implied b. ~1903 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brown |
| Given Name | Alexander |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | driver |
| Industry | coal mine |
| Class of Worker | W |
| Can Read | No |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Scotch |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Sangamon, Illinois
Head, age 27
Sangamon, Illinois · implied b. ~1903 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brown |
| Given Name | Alexander |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 27 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Laborer |
| Industry | Coal Mine |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Value / Rent | 500 |
| Veteran | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Sangamon-County, Illinois
Head, age 40
Sangamon-County, Illinois · implied b. ~1900 — 3 household members
| Surname | Brown |
| Given Name | Alexander |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Thayer village |
| 1935 Residence (County) | Sangamon |
| Occupation | Labor |
| Industry | W.P.A. Project |
| Class of Worker | GW |
| Hours Worked | 24 |
| Income (1939) | 480 |
| Highest Grade | No 8 |
| 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 Alexander Brown across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Alexander Brown (~0.92 confidence) and mother Isabelle Brown (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Alexander Brown
b. ~1860
Source father
● Household
· direct · ~0.92
Mother
Isabelle Brown
b. ~1860
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Alexander Brown
Head · 1940 · age 40 · b. ~1900 · 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 — Sangamon-County, Illinois
Open full size
1940 US Federal Census — Sangamon-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00884-00071)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Lillian Ovington | 20 | Daughter | Press Operator | Illinois |
| 42 | Geraldine Ovington | 18 | Daughter | New Worker | Illinois |
| 43 | William Ovington | 16 | Son | New Worker | Illinois |
| 44 | John Ovington | 15 | Son | New Worker | Illinois |
| 45 | George Watson | 51 | Head | Labor | Illinois |
| 46 | Lottie Watson | 45 | Wife | — | Illinois |
| 47 | Berniece Watson | 22 | Daughter | Assembly Parts | Illinois |
| 48 | John Radford | 59 | Head | Waiter | Illinois |
| 49 | Emilie Radford | 58 | Wife | — | Illinois |
| 50 | Irmadell Radford | 23 | Daughter | Press Operator | Illinois |
| 51 | Olive Radford | 20 | Daughter | New Worker | Illinois |
| 52 | Amos Thompson | 45 | Head | Labor | Illinois |
| 53 | Alice Thompson | 34 | Wife | — | Illinois |
| 54 | Audrey Thompson | 15 | Daughter | — | Illinois |
| 55 | Amos Jr. Thompson | 13 | Son | — | Illinois |
| 56 | Thomas Thompson | 11 | Son | — | Illinois |
| 57 | Wanda Thompson | 9 | Daughter | — | Illinois |
| 58 | Elmer Johnson | 43 | Head | Labor | Illinois |
| 59 | Alexander Brown THIS PERSON | 40 | Head | Labor | Illinois |
| 60 | Carrie Brown | 26 | Wife | — | Kentucky |
| 61 | Alex Brown | 10 | Son | — | Illinois |
| 62 | Joe Marsaglia | 54 | Head | Labor | Italy |
| 63 | Joe Jr. Marsaglia | 17 | Son | Labor | Illinois |
| 64 | Marie Marsaglia | 23 | Daughter | New Worker | Illinois |
| 65 | Margaret Marsaglia | 21 | Daughter | New Worker | Illinois |
| 66 | John Marsaglia | 18 | Son | New Worker | Illinois |
| 67 | Doris Marsaglia | 16 | Daughter | New Worker | Illinois |
| 68 | Jimmy Marsaglia | 13 | Son | — | Illinois |
| 69 | John Gubach | 74 | Head | Loader | Slovakia |
| 70 | Anna Gubach | 65 | Wife | — | Slovakia |
| 71 | Thomas Gubach | 13 | Son | Labor | Illinois |
| 72 | Betty Mccoy | 15 | Grandchild | New Worker | Illinois |
| 73 | Joe Mellet | 36 | Head | Labor | Illinois |
| 74 | Edna Mellet | 33 | Wife | — | Illinois |
| 75 | Margie Mellet | 12 | Daughter | — | Illinois |
| 76 | Robert Mellet | 10 | Son | — | Illinois |
| 77 | Joseph Evans | 62 | Head | Loader | Wales |
| 78 | Archibald Watson | 80 | Head | Loader | Scotland |
| 79 | Mike Wargo | 36 | Head | Foreman | Slovakia |
| 80 | Katherine Wargo | 30 | Wife | — | Illinois |
Pedigree Summary
Alexander
Gen 1 · 2 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)